Information technology -- Process assessment -- Process capability assessment model for service management

This document: — defines a process assessment model that relies on the process reference model published as ISO/IEC TS 33054 that meets the requirements of ISO/IEC 33004 and that supports the performance of an assessment by providing indicators for guidance on the interpretation of the process purposes and outcomes and the process attributes as defined in ISO/IEC 33020; — provides guidance, by example, on the definition, selection and use of assessment indicators. A process assessment model comprises a set of indicators of process performance and process capability. The indicators are used as a basis for collecting the objective evidence that enables an assessor to assign ratings. The set of indicators included in this document is not intended to be an all-inclusive set. The process assessment model in this document is directed at assessment sponsors and competent assessors who wish to select a model, and associated documented process method, for assessment (for either capability determination or process improvement). Additionally, it can be of use to developers of assessment models in the construction of their own model, by providing examples of good service management practices. It can be used by: a) service providers to assess and improve a service management system (SMS); b) service providers to demonstrate their capability for the planning, design, development, transition and delivery of services that meet agreed service management requirements. Any process assessment model meeting the requirements defined in ISO/IEC 33004 concerning models for process assessment can be used for assessment. Different models and methods can be needed to address differing business needs. The assessment model in ISO/IEC TS 33074 is provided as an assessment model meeting all the requirements expressed in ISO/IEC 33004.

Technologies de l'information -- Evaluation des processus -- Modèle d’évaluation de la capabilité d’un processus pour le management des services

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Published
Publication Date
25-May-2020
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6060 - International Standard published
Start Date
26-May-2020
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TECHNICAL ISO/IEC TS
SPECIFICATION 33074
First edition
2020-05
Information technology — Process
assessment — Process capability
assessment model for service
management
Technologies de l'information — Evaluation des processus — Modèle
d’évaluation de la capabilité d’un processus pour le management des
services
Reference number
ISO/IEC TS 33074:2020(E)
ISO/IEC 2020
---------------------- Page: 1 ----------------------
ISO/IEC TS 33074:2020(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO/IEC 2020

All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may

be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting

on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address

below or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Fax: +41 22 749 09 47
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii © ISO/IEC 2020 – All rights reserved
---------------------- Page: 2 ----------------------
ISO/IEC TS 33074:2020(E)
Contents Page

Foreword ..........................................................................................................................................................................................................................................v

Introduction ................................................................................................................................................................................................................................vi

1 Scope ................................................................................................................................................................................................................................. 1

2 Normative references ...................................................................................................................................................................................... 1

3 Terms and definitions ..................................................................................................................................................................................... 1

4 Overview of the process assessment model ............................................................................................................................. 2

4.1 General ........................................................................................................................................................................................................... 2

4.2 Structure of the process assessment model .................................................................................................................. 3

4.2.1 General...................................................................................................................................................................................... 3

4.2.2 Processes ................................................................................................................................................................................ 3

4.2.3 Process dimension ......................................................................................................................................................... 4

4.2.4 Capability dimension ................................................................................................................................................... 4

4.3 Assessment indicators ...................................................................................................................................................................... 6

4.3.1 General...................................................................................................................................................................................... 6

4.3.2 Process capability indicators ................................................................................................................................ 7

4.3.3 Process performance indicators ........................................................................................................................ 9

4.4 Measuring process capability ..................................................................................................................................................... 9

5 The process dimension and process performance indicators (level 1) ...................................................11

5.1 General ........................................................................................................................................................................................................11

5.2 COM.01 Communication management ............................................................................................................................12

5.3 COM.02 Documentation management .............................................................................................................................14

5.4 COM.03 Human resource management ..........................................................................................................................20

5.5 COM.04 Improvement ....................................................................................................................................................................21

5.6 COM.05 Internal audit....................................................................................................................................................................23

5.7 COM.06 Management review ...................................................................................................................................................24

5.8 COM.07 Non-conformity management ...........................................................................................................................25

5.9 COM.08 Operational planning .................................................................................................................................................27

5.10 COM.09 Operational implementation and control ................................................................................................34

5.11 COM.10 Performance evaluation ..........................................................................................................................................36

5.12 COM.11 Risk management .........................................................................................................................................................38

5.13 RAA.1 Business relationship management ..................................................................................................................40

5.14 RAA.2 Service level management.........................................................................................................................................40

5.15 RAA.3 Service reporting ...............................................................................................................................................................41

5.16 RAA.4 Supplier management ...................................................................................................................................................43

5.17 RAA.5 Service catalogue management ............................................................................................................................45

5.18 RAF.1 Incident management ....................................................................................................................................................45

5.19 RAF.2 Service request management ..................................................................................................................................46

5.20 RAF.3 Problem management ....................................................................................................................................................47

5.21 SAD.1 Budgeting and accounting for services ...........................................................................................................48

5.22 SAD.2 Demand management ....................................................................................................................................................49

5.23 SAD.3 Capacity management ...................................................................................................................................................50

5.24 SAS.1 Service availability management ..........................................................................................................................51

5.25 SAS.2 Service continuity management ............................................................................................................................51

5.26 SAS.3 Information security management .....................................................................................................................53

5.27 SDB.1 Service requirements definition ...........................................................................................................................54

5.28 SDB.2 Service design .......................................................................................................................................................................54

5.29 SDB.3 Service build and transition .....................................................................................................................................55

5.30 SDB.4 Release and deployment management ...........................................................................................................56

5.31 SDE.1 Service delivery ...................................................................................................................................................................57

5.32 SPC.1 Change management .......................................................................................................................................................58

5.33 SPC.2 Configuration management .......................................................................................................................................60

5.34 TOP.01 Leadership ............................................................................................................................................................................62

© ISO/IEC 2020 – All rights reserved iii
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ISO/IEC TS 33074:2020(E)

6 Process capability indicators ...............................................................................................................................................................66

6.1 Introduction ...........................................................................................................................................................................................66

6.2 Process capability levels and process attributes ....................................................................................................66

6.2.1 General...................................................................................................................................................................................66

6.2.2 Process capability Level 0: Incomplete process.................................................................................66

6.2.3 Process capability Level 1: Performed process ..................................................................................67

6.2.4 Process capability Level 2: Managed process ......................................................................................67

6.2.5 Process capability Level 3: Established process ................................................................................72

6.2.6 Process capability Level 4: Predictable process ................................................................................76

6.2.7 Process capability Level 5: Innovating process ..................................................................................80

6.3 Related processes for process attributes ......................................................................................................................84

Annex A (informative) Conformity of the process assessment model ............................................................................86

Annex B (informative) Input and output characteristics .............................................................................................................92

Annex C (informative) Mapping between base practices and ISO/IEC 20000-1 requirements........142

Bibliography .........................................................................................................................................................................................................................273

iv © ISO/IEC 2020 – All rights reserved
---------------------- Page: 4 ----------------------
ISO/IEC TS 33074:2020(E)
Foreword

ISO (the International Organization for Standardization) and IEC (the International Electrotechnical

Commission) form the specialized system for worldwide standardization. National bodies that

are members of ISO or IEC participate in the development of International Standards through

technical committees established by the respective organization to deal with particular fields of

technical activity. ISO and IEC technical committees collaborate in fields of mutual interest. Other

international organizations, governmental and non-governmental, in liaison with ISO and IEC, also

take part in the work.

The procedures used to develop this document and those intended for its further maintenance are

described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for

the different types of document should be noted. This document was drafted in accordance with the

editorial rules of the ISO/IEC Directives, Part 2 (see www .iso .org/ directives).

Attention is drawn to the possibility that some of the elements of this document may be the subject

of patent rights. ISO and IEC shall not be held responsible for identifying any or all such patent

rights. Details of any patent rights identified during the development of the document will be in the

Introduction and/or on the ISO list of patent declarations received (see www .iso .org/ patents) or the IEC

list of patent declarations received (see http:// patents .iec .ch).

Any trade name used in this document is information given for the convenience of users and does not

constitute an endorsement.

For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and

expressions related to conformity assessment, as well as information about ISO's adherence to the

World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT), see www .iso .org/

iso/ foreword .html.

This document was prepared by Joint Technical Committee ISO/IEC JTC 1, Information technology,

Subcommittee SC 7, Software and systems engineering.

This first edition cancels and replaces ISO/IEC TS 15504-8:2012, which has been technically revised.

The main changes compared to the previous edition are as follows:

— all processes and their base practices are changed to reflect the ISO/IEC TS 33054 processes;

— all process related information products and their descriptions are revised;

— this process assessment model includes a process quality attribute of process performance and can

be used with other models of process quality, for instance capability as described in ISO/IEC 33020.

Any feedback or questions on this document should be directed to the user’s national standards body. A

complete listing of these bodies can be found at www .iso .org/ members .html.
© ISO/IEC 2020 – All rights reserved v
---------------------- Page: 5 ----------------------
ISO/IEC TS 33074:2020(E)
Introduction

This document provides a service management process assessment model for use in performing a

conformity assessment of process capability in accordance with the requirements of ISO/IEC 33002.

It is structured in accordance with the requirements of ISO/IEC 33004 to reflect processes associated

with ISO/IEC 20000-1. The scale for assessing the extent of achievement of process capability is based

on ISO/IEC 33020.

This document provides a framework of reference for the capability assessment of processes that

support the domain of service management.

An integral part of conducting an assessment is to use a process assessment model that is constructed

for that purpose. A process assessment model is related to a process reference model and is conformant

with ISO/IEC 33004. ISO/IEC 33002 identifies the minimum requirements for performing an assessment

in order to ensure consistency and repeatability of the ratings. ISO/IEC 33002 addresses the assessment

of process and the application of process assessment for improvement and capability determination.

Results of conformant process assessments may be compared when the scopes of the assessments are

considered to be similar.

The requirements for process assessment defined in ISO/IEC 33002 form a structure which:

a) facilitates self-assessment;
b) provides a basis for use in process improvement and capability determination;
c) takes into account the context in which the assessed process is implemented;
d) produces a process rating;
e) addresses the ability of the process to achieve its purpose;
f) is applicable across all application domains and sizes of organization;
g) may provide an objective benchmark between organizations.

The relationship between ISO/IEC TR 24774, ISO/IEC 20000-1, ISO/IEC 33002, ISO/IEC 33004,

ISO/IEC 33020, ISO/IEC TS 33054, and this document is shown in Figure 1.
Figure 1 — Relationships between relevant standards
vi © ISO/IEC 2020 – All rights reserved
---------------------- Page: 6 ----------------------
ISO/IEC TS 33074:2020(E)

Any organization may use processes with additional elements in order to suit it to the environment

and circumstances. This process assessment model contains a set of indicators to be considered when

interpreting the intent of its process reference model. It provides greater detail to indicate process

performance and capability. The indicators may also be used when implementing a process improvement

program or to help evaluate and select an assessment model, method, methodology or tools.

This process assessment model embodies the core characteristics that could be expected of any process

assessment model consistent with ISO/IEC 33004. Nevertheless, any other process assessment models

meeting the requirements of ISO/IEC 33004 may be used in a conformity assessment.

This document has a similar structure to ISO/IEC TS 33072 and ISO/IEC TS 33073. It may be used in

conjunction with these process assessment models to support joint assessment of service management

processes, information security management, and quality management processes
Within this document:

— Clause 4 provides a detailed description of the structure and key components of a process assessment

model, which includes two dimensions: a process dimension and a capability dimension. Assessment

indicators are introduced in this clause.

— Clause 5 addresses the process dimension. The processes are described in the process assessment

model in terms of purpose and outcomes. The process assessment model includes a set of process

performance indicators called base practices for each process. The process assessment model

also defines a second set of indicators of process performance by associating inputs and outputs

with each process. Clause 5 is also linked directly to Annex B, which defines the inputs/outputs

characteristics.

— Clause 6 addresses the capability dimension. It duplicates the definitions of the capability levels

and process attributes from ISO/IEC 33020, and expands each of the nine attributes through the

inclusion of a set of generic practices. These generic practices belong to a set of indicators of process

capability, in association with generic resource indicators, and generic inputs/outputs indicators.

Annex B is also linked directly to Clause 6 as it defines the inputs/outputs characteristics.

— Annex A provides a statement of conformance of the process assessment model to the requirements

defined in ISO/IEC 33004.

— Annex B provides selected characteristics for typical inputs/outputs to assist the assessor in

evaluating the capability level of processes.

— Annex C contains three tables. Table C.1 identifies the base practices linked to requirements;

Table C.2 identifies the requirements linked to base practices; and lastly, Table C.3 identifies the

base practices not linked to requirements.
© ISO/IEC 2020 – All rights reserved vii
---------------------- Page: 7 ----------------------
TECHNICAL SPECIFICATION ISO/IEC TS 33074:2020(E)
Information technology — Process assessment — Process
capability assessment model for service management
1 Scope
This document:

— defines a process assessment model that relies on the process reference model published as

ISO/IEC TS 33054 that meets the requirements of ISO/IEC 33004 and that supports the performance

of an assessment by providing indicators for guidance on the interpretation of the process purposes

and outcomes and the process attributes as defined in ISO/IEC 33020;

— provides guidance, by example, on the definition, selection and use of assessment indicators.

A process assessment model comprises a set of indicators of process performance and process capability.

The indicators are used as a basis for collecting the objective evidence that enables an assessor to assign

ratings. The set of indicators included in this document is not intended to be an all-inclusive set.

The process assessment model in this document is directed at assessment sponsors and competent

assessors who wish to select a model, and associated documented process method, for assessment (for

either capability determination or process improvement). Additionally, it can be of use to developers

of assessment models in the construction of their own model, by providing examples of good service

management practices. It can be used by:
a) service providers to assess and improve a service management system (SMS);

b) service providers to demonstrate their capability for the planning, design, development, transition

and delivery of services that meet agreed service management requirements.

Any process assessment model meeting the requirements defined in ISO/IEC 33004 concerning models

for process assessment can be used for assessment. Different models and methods can be needed

to address differing business needs. The assessment model in ISO/IEC TS 33074 is provided as an

assessment model meeting all the requirements expressed in ISO/IEC 33004.
2 Normative references

The following documents are referred to in the text in such a way that some or all of their content

constitutes requirements of this document. For dated references, only the edition cited applies. For

undated references, the latest edition of the referenced document (including any amendments) applies.

ISO/IEC 20000-10, Information technology — Service management — Part 10: Concepts and vocabulary

ISO/IEC 33001, Information technology — Process assessment — Concepts and terminology

ISO/IEC TS 33054, Information technology — Process Assessment — Process reference model for service

management
3 Terms and definitions

For the purposes of this document, the terms and definitions given in ISO/IEC 33001 and

ISO/IEC 20000-10 apply.

ISO and IEC maintain terminological databases for use in standardization at the following addresses:

— ISO Online browsing platform: available at https:// www .iso .org/ obp
© ISO/IEC 2020 – All rights reserved 1
---------------------- Page: 8 ----------------------
ISO/IEC TS 33074:2020(E)
— IEC Electropedia: available at http:// www .electropedia .org/
4 Overview of the process assessment model
4.1 General

ISO/IEC TS 33074 provides a process assessment model that includes examples of assessment indicators.

The process reference model defined in this document, associated with the process attributes defined

in ISO/IEC 33020, establish a process assessment model used as a common basis for performing

assessments of service management system process capability, allowing for the reporting of results

using a common rating scale. The process reference model shall be in accordance with ISO/IEC TS 33054.

This process assessment model is a two-dimensional model of the process quality characteristic of

process capability. In one dimension, the process dimension, the processes are defined. In the other

dimension, the capability dimension, a set of process attributes grouped into capability levels is defined.

The process attributes provide the measurable features of the process quality characteristic of process

capability.
Figure 2 — Relationship between the process assessment model and its inputs

Figure 2 shows the relationship between the general structure of the process assessment model and

ISO/IEC 33020.

A process reference model conformant with the requirements defined in ISO/IEC 33004 and a

capability dimension defined in ISO/IEC 33020 cannot be used alone as the basis for conducting reliable

and consistent assessments of process capability since the level of detail provided is not sufficient. The

descriptions of process purpose and outcomes in a process reference model, and the process attribute

definitions in ISO/IEC 33020, need to be supported with a comprehensive set of indicators of process

performance and process capability that are used for assessment performance.
2 © ISO/IEC 2020 – All rights reserved
---------------------- Page: 9 ----------------------
ISO/IEC TS 33074:2020(E)

The process assessment model defined in this document is conformant with the ISO/IEC 33004

requirements for a process assessment model, and can be used as the basis for conducting an assessment

of service management process capability.

In order to meet the process assessment model requirements of ISO/IEC 33004, a documented process

supporting other requirements of ISO/IEC 33002 is also required. This need may be met, for example,

by the adoption of a supporting method for conducting assessments.

Users of this document may freely reproduce the detailed descriptions contained in the assessment

model as part of any tool or other material to support the performance of process assessments, so that

it can be used for its intended purpose.
4.2 Structure of the process assessment model
4.2.1 General

This subclause describes the detailed structure of the process assessment model and its key

components.

This process assessment model expands upon the process reference model by including a defined set of

assessment indicators. Assessment indicators comprise indicators of process performance and process

capability and are defined to support an assessor’s judgment of the performance and capability of an

implemented process.

Clause 5, together with the associated Annex B, describes the components of the process dimension,

and Clause 6 describes the components of the capability dimension. Annex A provides a statement of

conformance of the process assessment model to the requirements defined in ISO/IEC 33004.

Refer to ISO/IEC 33004 for the requirements for processes included in a process reference model.

4.2.2 Processes

Figure 3 shows the processes included in the process dimension of the process assessment model for

service management.
© ISO/IEC 2020 – All rights reserved 3
---------------------- Page: 10 ----------------------
ISO/IEC TS 33074:2020(E)
Figure 3 — Processes in the process assessment model
4.2.3 Process dimension

The process dimension of the process assessment model includes all processes and shown in Figure 3.

Each process in the process assessment model is described in terms of a purpose statement. These

statements contain the unique functional objectives of the process when performed in a particular

environment. A list of specific outcomes is associated with each of the process purpose statements, as a

list of expected positive results of the performance of the processes.

Satisfying the purpose statements of a process represents the first step in building a level 1 process

capability where the expected outcomes are observable. The processes are described in Clause 5.

4.2.4 Capability dimension

For the capability dimension, the process capability levels and process attributes are identical to those

defined in ISO/IEC 33020.
4 © ISO/IEC 2020 – All rights reserved
---------------------- Page: 11 ----------------------
ISO/IEC TS 33074:2020(E)

Evolving process capability is expressed in the process assessment model in terms of process attributes

grouped into capability levels. Process attributes are features of a process that can be evaluated on a

scale of achievement, providing a measure of the capability of the process. They are applicable to all

processes. Each process attribute describes a facet of the overall capability of managing and improving

the effectiveness of a process in achieving its purpose and contributing to the business goals of the

organization.

A capability level is a set of process attribute(s) that work together to provide a major enhancement

in the capability to perform a process. The levels constitute a rational way of progressing through

imp
...

TECHNICAL ISO/IEC TS
SPECIFICATION 33074
First edition
Information technology — Process
assessment — Process capability
assessment model for service
management
PROOF/ÉPREUVE
Reference number
ISO/IEC TS 33074:2020(E)
ISO/IEC 2020
---------------------- Page: 1 ----------------------
ISO/IEC TS 33074:2020(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO/IEC 2020

All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may

be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting

on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address

below or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Fax: +41 22 749 09 47
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii PROOF/ÉPREUVE © ISO/IEC 2020 – All rights reserved
---------------------- Page: 2 ----------------------
ISO/IEC TS 33074:2020(E)
Contents Page

Foreword ..........................................................................................................................................................................................................................................v

Introduction ................................................................................................................................................................................................................................vi

1 Scope ................................................................................................................................................................................................................................. 1

2 Normative references ...................................................................................................................................................................................... 1

3 Terms and definitions ..................................................................................................................................................................................... 1

4 Overview of the process assessment model ............................................................................................................................. 2

4.1 General ........................................................................................................................................................................................................... 2

4.2 Structure of the process assessment model .................................................................................................................. 3

4.2.1 General...................................................................................................................................................................................... 3

4.2.2 Processes ................................................................................................................................................................................ 3

4.2.3 Process dimension ......................................................................................................................................................... 4

4.2.4 Capability dimension ................................................................................................................................................... 4

4.3 Assessment indicators ...................................................................................................................................................................... 6

4.3.1 General...................................................................................................................................................................................... 6

4.3.2 Process capability indicators ................................................................................................................................ 7

4.3.3 Process Performance Indicators ........................................................................................................................ 9

4.4 Measuring process capability ..................................................................................................................................................... 9

5 The process dimension and process performance indicators (level 1) ...................................................11

5.1 General ........................................................................................................................................................................................................11

5.2 COM.01 Communication management ............................................................................................................................11

5.3 COM.02 Documentation management .............................................................................................................................14

5.4 COM.03 Human resource management ..........................................................................................................................20

5.5 COM.04 Improvement ....................................................................................................................................................................21

5.6 COM.05 Internal audit....................................................................................................................................................................23

5.7 COM.06 Management review ...................................................................................................................................................24

5.8 COM.07 Non-conformity management ...........................................................................................................................25

5.9 COM.08 Operational planning .................................................................................................................................................27

5.10 COM.09 Operational implementation and control ................................................................................................34

5.11 COM.10 Performance evaluation ..........................................................................................................................................36

5.12 COM.11 Risk management .........................................................................................................................................................38

5.13 RAA.1 Business relationship management ..................................................................................................................40

5.14 RAA.2 Service level management.........................................................................................................................................40

5.15 RAA.3 Service reporting ...............................................................................................................................................................41

5.16 RAA.4 Supplier management ...................................................................................................................................................43

5.17 RAA.5 Service catalogue management ............................................................................................................................45

5.18 RAF.1 Incident management ....................................................................................................................................................45

5.19 RAF.2 Service request management ..................................................................................................................................46

5.20 RAF.3 Problem management ....................................................................................................................................................47

5.21 SAD.1 Budgeting and accounting for services ...........................................................................................................48

5.22 SAD.2 Demand management ....................................................................................................................................................49

5.23 SAD.3 Capacity management ...................................................................................................................................................50

5.24 SAS.1 Service availability management ..........................................................................................................................51

5.25 SAS.2 Service continuity management ............................................................................................................................51

5.26 SAS.3 Information security management .....................................................................................................................53

5.27 SDB.1 Service requirements definition ...........................................................................................................................54

5.28 SDB.2 Service design .......................................................................................................................................................................54

5.29 SDB.3 Service build and transition .....................................................................................................................................55

5.30 SDB.4 Release and deployment management ...........................................................................................................56

5.31 SDE.1 Service delivery ...................................................................................................................................................................57

5.32 SPC.1 Change management .......................................................................................................................................................58

5.33 SPC.2 Configuration management .......................................................................................................................................60

5.34 TOP.01 Leadership ............................................................................................................................................................................62

© ISO/IEC 2020 – All rights reserved PROOF/ÉPREUVE iii
---------------------- Page: 3 ----------------------
ISO/IEC TS 33074:2020(E)

6 Process capability indicators ...............................................................................................................................................................66

6.1 Introduction ...........................................................................................................................................................................................66

6.2 Process capability levels and process attributes ....................................................................................................66

6.2.1 General...................................................................................................................................................................................66

6.2.2 Process capability Level 0: Incomplete process.................................................................................66

6.2.3 Process capability Level 1: Performed process ..................................................................................67

6.2.4 Process capability Level 2: Managed process ......................................................................................67

6.2.5 Process capability Level 3: Established process ................................................................................72

6.2.6 Process capability Level 4: Predictable process ................................................................................76

6.2.7 Process capability Level 5: Innovating process ..................................................................................80

6.3 Related processes for process attributes ......................................................................................................................84

Annex A (informative) Conformity of the process assessment model ............................................................................86

Annex B (informative) Input and output characteristics .............................................................................................................92

Annex C (informative) Mapping between base practices and ISO/IEC 20000-1 requirements........142

Bibliography .........................................................................................................................................................................................................................280

iv PROOF/ÉPREUVE © ISO/IEC 2020 – All rights reserved
---------------------- Page: 4 ----------------------
ISO/IEC TS 33074:2020(E)
Foreword

ISO (the International Organization for Standardization) and IEC (the International Electrotechnical

Commission) form the specialized system for worldwide standardization. National bodies that

are members of ISO or IEC participate in the development of International Standards through

technical committees established by the respective organization to deal with particular fields of

technical activity. ISO and IEC technical committees collaborate in fields of mutual interest. Other

international organizations, governmental and non-governmental, in liaison with ISO and IEC, also

take part in the work.

The procedures used to develop this document and those intended for its further maintenance are

described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for

the different types of document should be noted. This document was drafted in accordance with the

editorial rules of the ISO/IEC Directives, Part 2 (see www .iso .org/ directives).

Attention is drawn to the possibility that some of the elements of this document may be the subject

of patent rights. ISO and IEC shall not be held responsible for identifying any or all such patent

rights. Details of any patent rights identified during the development of the document will be in the

Introduction and/or on the ISO list of patent declarations received (see www .iso .org/ patents) or the IEC

list of patent declarations received (see http:// patents .iec .ch).

Any trade name used in this document is information given for the convenience of users and does not

constitute an endorsement.

For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and

expressions related to conformity assessment, as well as information about ISO's adherence to the

World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT), see www .iso .org/

iso/ foreword .html.

This document was prepared by Joint Technical Committee ISO/IEC JTC 1, Information technology,

Subcommittee SC 7, Software and systems engineering.

This first edition cancels and replaces ISO/IEC TS 15504-8, which has been technically revised.

The main changes compared to the previous edition are as follows:

— all processes and their base practices are changed to reflect the ISO/IEC TS 33054 processes;

— all process related information products and their descriptions are revised;

— this process assessment model includes a process quality attribute of process performance and can

be used with other models of process quality, for instance capability as described in ISO/IEC 33020.

Any feedback or questions on this document should be directed to the user’s national standards body. A

complete listing of these bodies can be found at www .iso .org/ members .html.
© ISO/IEC 2020 – All rights reserved PROOF/ÉPREUVE v
---------------------- Page: 5 ----------------------
ISO/IEC TS 33074:2020(E)
Introduction

This document provides a service management process assessment model for use in performing a

conformity assessment of process capability in accordance with the requirements of ISO/IEC 33002.

It is structured in accordance with the requirements of ISO/IEC 33004 to reflect processes associated

with ISO/IEC 20000-1. The scale for assessing the extent of achievement of process capability is based

on ISO/IEC 33020.

This document provides a framework of reference for the capability assessment of processes that

support the domain of service management.

An integral part of conducting an assessment is to use a process assessment model that is constructed

for that purpose. A process assessment model is related to a process reference model and is conformant

with ISO/IEC 33004. ISO/IEC 33002 identifies the minimum requirements for performing an assessment

in order to ensure consistency and repeatability of the ratings. ISO/IEC 33002 addresses the assessment

of process and the application of process assessment for improvement and capability determination.

Results of conformant process assessments may be compared when the scopes of the assessments are

considered to be similar.

The requirements for process assessment defined in ISO/IEC 33002 form a structure which:

a) facilitates self-assessment;
b) provides a basis for use in process improvement and capability determination;
c) takes into account the context in which the assessed process is implemented;
d) produces a process rating;
e) addresses the ability of the process to achieve its purpose;
f) is applicable across all application domains and sizes of organization;
g) may provide an objective benchmark between organizations.

The relationship between ISO/IEC TR 24774, ISO/IEC 20000-1, ISO/IEC 33002, ISO/IEC 33004,

ISO/IEC 33020, ISO/IEC TS 33054, and this document is shown in Figure 1.
Figure 1 — Relationships between relevant standards
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ISO/IEC TS 33074:2020(E)

Any organization may use processes with additional elements in order to suit it to the environment

and circumstances. This process assessment model contains a set of indicators to be considered when

interpreting the intent of its process reference model. It provides greater detail to indicate process

performance and capability. The indicators may also be used when implementing a process improvement

program or to help evaluate and select an assessment model, method, methodology or tools.

This process assessment model embodies the core characteristics that could be expected of any process

assessment model consistent with ISO/IEC 33004. Nevertheless, any other process assessment models

meeting the requirements of ISO/IEC 33004 may be used in a conformity assessment.

This document has a similar structure to ISO/IEC TS 33072 and ISO/IEC TS 33073. It may be used in

conjunction with these process assessment models to support joint assessment of service management

processes, information security management, and quality management processes
Within this document:

— Clause 4 provides a detailed description of the structure and key components of a process assessment

model, which includes two dimensions: a process dimension and a capability dimension. Assessment

indicators are introduced in this clause.

— Clause 5 addresses the process dimension. The processes are described in the process assessment

model in terms of purpose and outcomes. The process assessment model includes a set of process

performance indicators called base practices for each process. The process assessment model

also defines a second set of indicators of process performance by associating inputs and outputs

with each process. Clause 5 is also linked directly to Annex B, which defines the inputs/outputs

characteristics.

— Clause 6 addresses the capability dimension. It duplicates the definitions of the capability levels

and process attributes from ISO/IEC 33020, and expands each of the nine attributes through the

inclusion of a set of generic practices. These generic practices belong to a set of indicators of process

capability, in association with generic resource indicators, and generic inputs/outputs indicators.

Annex B is also linked directly to Clause 6 as it defines the inputs/outputs characteristics.

— Annex A provides a statement of conformance of the process assessment model to the requirements

defined in ISO/IEC 33004.

— Annex B provides selected characteristics for typical inputs/outputs to assist the assessor in

evaluating the capability level of processes.

— Annex C contains three tables. Table C.1 identifies the base practices linked to requirements;

Table C.2 identifies the requirements linked to base practices; and lastly, Table C.3 identifies the

base practices not linked to requirements.
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TECHNICAL SPECIFICATION ISO/IEC TS 33074:2020(E)
Information technology — Process assessment — Process
capability assessment model for service management
1 Scope
This document:

— defines a process assessment model that relies on the process reference model published as

ISO/IEC TS 33054 that meets the requirements of ISO/IEC 33004 and that supports the performance

of an assessment by providing indicators for guidance on the interpretation of the process purposes

and outcomes and the process attributes as defined in ISO/IEC 33020;

— provides guidance, by example, on the definition, selection and use of assessment indicators.

A process assessment model comprises a set of indicators of process performance and process capability.

The indicators are used as a basis for collecting the objective evidence that enables an assessor to assign

ratings. The set of indicators included in this document is not intended to be an all-inclusive set.

The process assessment model in this document is directed at assessment sponsors and competent

assessors who wish to select a model, and associated documented process method, for assessment (for

either capability determination or process improvement). Additionally, it can be of use to developers

of assessment models in the construction of their own model, by providing examples of good service

management practices. It can be used by:
a) service providers to assess and improve a service management system (SMS);

b) service providers to demonstrate their capability for the planning, design, development, transition

and delivery of services that meet agreed service management requirements.

Any process assessment model meeting the requirements defined in ISO/IEC 33004 concerning models

for process assessment can be used for assessment. Different models and methods can be needed

to address differing business needs. The assessment model in ISO/IEC TS 33074 is provided as an

assessment model meeting all the requirements expressed in ISO/IEC 33004.
2 Normative references

The following documents are referred to in the text in such a way that some or all of their content

constitutes requirements of this document. For dated references, only the edition cited applies. For

undated references, the latest edition of the referenced document (including any amendments) applies.

ISO/IEC 20000-10, Information technology — Service management — Part 10: Concepts and vocabulary

ISO/IEC 33001, Information technology — Process assessment — Concepts and terminology

ISO/IEC TS 33054, Information technology — Process Assessment — Process reference model for service

management
3 Terms and definitions

For the purposes of this document, the terms and definitions given in ISO/IEC 33001 and

ISO/IEC 20000-10 apply.

ISO and IEC maintain terminological databases for use in standardization at the following addresses:

— ISO Online browsing platform: available at https:// www .iso .org/ obp
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ISO/IEC TS 33074:2020(E)
— IEC Electropedia: available at http:// www .electropedia .org/
4 Overview of the process assessment model
4.1 General

ISO/IEC TS 33074 provides a process assessment model that includes examples of assessment indicators.

The process reference model defined in this document, associated with the process attributes defined

in ISO/IEC 33020, establish a process assessment model used as a common basis for performing

assessments of service management system process capability, allowing for the reporting of results

using a common rating scale. The process reference model shall be in accordance with ISO/IEC TS 33054.

This process assessment model is a two-dimensional model of the process quality characteristic of

process capability. In one dimension, the process dimension, the processes are defined. In the other

dimension, the capability dimension, a set of process attributes grouped into capability levels is defined.

The process attributes provide the measurable features of the process quality characteristic of process

capability.
Figure 2 — Relationship between the process assessment model and its inputs

Figure 2 shows the relationship between the general structure of the process assessment model and

ISO/IEC 33020.

A process reference model conformant with the requirements defined in ISO/IEC 33004 and a

capability dimension defined in ISO/IEC 33020 cannot be used alone as the basis for conducting reliable

and consistent assessments of process capability since the level of detail provided is not sufficient. The

descriptions of process purpose and outcomes in a process reference model, and the process attribute

definitions in ISO/IEC 33020, need to be supported with a comprehensive set of indicators of process

performance and process capability that are used for assessment performance.
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ISO/IEC TS 33074:2020(E)

The process assessment model defined in this document is conformant with the ISO/IEC 33004

requirements for a process assessment model, and can be used as the basis for conducting an assessment

of service management process capability.

In order to meet the process assessment model requirements of ISO/IEC 33004, a documented process

supporting other requirements of ISO/IEC 33002 is also required. This need may be met, for example,

by the adoption of a supporting method for conducting assessments.

Users of this document may freely reproduce the detailed descriptions contained in the assessment

model as part of any tool or other material to support the performance of process assessments, so that

it can be used for its intended purpose.
4.2 Structure of the process assessment model
4.2.1 General

This subclause describes the detailed structure of the process assessment model and its key

components.

This process assessment model expands upon the process reference model by including a defined set of

assessment indicators. Assessment indicators comprise indicators of process performance and process

capability and are defined to support an assessor’s judgment of the performance and capability of an

implemented process.

Clause 5, together with the associated Annex B, describes the components of the process dimension,

and Clause 6 describes the components of the capability dimension. Annex A provides a statement of

conformance of the process assessment model to the requirements defined in ISO/IEC 33004.

Refer to ISO/IEC 33004 for the requirements for processes included in a process reference model.

4.2.2 Processes

Figure 3 shows the processes included in the process dimension of the process assessment model for

service management.
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ISO/IEC TS 33074:2020(E)
Figure 3 — Processes in the process assessment model
4.2.3 Process dimension

The process dimension of the process assessment model includes all processes and shown in Figure 3.

Each process in the process assessment model is described in terms of a purpose statement. These

statements contain the unique functional objectives of the process when performed in a particular

environment. A list of specific outcomes is associated with each of the process purpose statements, as a

list of expected positive results of the performance of the processes.

Satisfying the purpose statements of a process represents the first step in building a level 1 process

capability where the expected outcomes are observable. The processes are described in Clause 5.

4.2.4 Capability dimension

For the capability dimension, the process capability levels and process attributes are identical to those

defined in ISO/IEC 33020.
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ISO/IEC TS 33074:2020(E)

Evolving process capability is expressed in the process assessment model in terms of process attributes

grouped into capability levels. Process attributes are features of a process that can be evaluated on a

scale of achievement, providing a measure of the capability of the process. They are applicable to all

processes. Each process attribute describes a facet of the overall capability of managing and improving

the effectiveness of a process in achieving its purpose and contributing to the business goals of the

organization.

A capability level is a set of process attribute(s) that work together to provide a major enhancement

in the capability to perform a process. The levels constitute a rational way of progressing through

improvement of th
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