EABOK DRAFT Public release approved; distribution unlimited Case No. 04-0104, 04-0105

Guide to the (Evolving) Enterprise Architecture Body of Knowledge

Draft

6 February 2004

EABOK

A Project of The MITRE Corporation

Editor

MITRE McLean, Virginia

Dr. Paula J. Hagan, W900, The MITRE Corporation

2004 The MITRE Corporation

Not an official position of The MITRE Corporation

Draft Working Materials There may be errors and inconsistencies in the materials herein

2004 The MITRE Corporation. All rights reserved. This is the copyright work of the MITRE Corporation. For further information, please contact The MITRE Corporation, Contracts Office, 7515 Colshire Drive, McLean, VA 22102 (703)

883-6000.

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Public release approved; distribution unlimited

Case No. 04-0104, 04-0105

Table of Contents

Participants.......................................................................................................................... 5

1. Introduction to the Guide ................................................................................................ 6

2. EA Charter and Context................................................................................................ 12

2.1 Evolution of the Definition of Enterprise Architecture .......................................... 12

2.2 EA Legislation and Guidance ................................................................................. 17

2.2.1 The Evolution of EA-Related Legislation ....................................................... 17

2.2.2 United States Code Sections Relevant to EA .................................................. 19

) Reference Model (NCOW RM)

3.4

2.2.3 Refining EA Guidance through OMB Circulars.............................................. 19 2.2.4 EA Guidance from the CIO Council................................................................ 20

2.5 Historical Developments in EA .............................................................................. 22 3. Foundational Practices and Tools for EA Development............................................... 26

3.1 Enterprise Architecture Frameworks ...................................................................... 28 3.1.1 What is an Enterprise Architecture Framework?............................................. 28 3.1.2 The Zachman EA Framework Foundational Ideas ....................................... 29 3.1.3 Overview of Major Federally-Sponsored Frameworks ................................... 31 3.1.4 State and Industry-Sponsored Frameworks ..................................................... 40 3.1.5 Comparing Frameworks................................................................................... 41

3.2 Reference Models and Reference Architectures..................................................... 44 3.2.1 OMB Reference Models: The Federal Enterprise Architecture (FEA) ........... 44 3.2.2 Net-Centric Operations and Warfare (NCOW- Future...................................................................................................................... 57 3.2.3 The Global Information Grid (GIG) Future.................................................. 57

3.3 Processes for Developing the EA ........................................................................... 58 3.3.1 Introduction...................................................................................................... 58 3.3.2 DODAF Six Step Process ................................................................................ 58 3.3.3 MetaGroup Process Model .............................................................................. 59 3.3.4 Spewaks Enterprise Architecture Planning .................................................... 60 3.3.5 Practical Guide Process.................................................................................... 62 3.3.6 TOGAF Architecture Development Method (ADM) ...................................... 63 3.3.7 Levis Process for Developing Products for the C4ISR (DODAF) Framework63 3.3.8 Other EA Development Processes ................................................................... 64

Modeling Methods ............................................................................................ 66 3.4.1 Introduction...................................................................................................... 66 3.4.2 The Business Process Model ........................................................................... 67 3.4.3 The Data Model Future ................................................................................. 82 3.4.4 Other Modeling Methods Future .................................................................. 82

3.5 Architecture Modeling Tools.................................................................................. 83

3.5.1 Types of Architecture Tools and Users ........................................................... 84

3.5.2 Tool Assessment Criteria ................................................................................. 86

3.5.3 Assessment Approach ...................................................................................... 89

3.5.4 Issues with Choosing a Tool ............................................................................ 90

3.5.5 Issues with Organizational Use of Automated Tools ...................................... 91

3.5.6 Recommended Solution ................................................................................... 91

Dummy heading to clear text ............................................................................................ 92

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4. Establishing and Managing the EA Program................................................................ 93

4.3.1 Determining the Information Needed for the Enterprise Architecture ............ 95

4.3.2 Tailoring EA Products for Specific Circumstances .................................. 97

4.5 Risks...................................................................................................................... 104

4.9 Maturing Agency EA Efforts............................................................................... 106

4.9.1 Vision, Values, and Leadership ..................................................................... 106

4.9.2 Areas of Responsibility and Establishing Cooperation ................................. 106

4.9.3 Purpose and Scope ......................................................................................... 107

4.9.4 Simplifications for the Initial EA Products.................................................... 107

4.9.5 Initial and Maturing Processes....................................................................... 107

5. Engineering the EA..................................................................................................... 110 5.1 Engineering Issues for EA Views ......................................................................... 110

5.1.1 The Business Architecture View FUTURE ................................................ 110 5.1.2 The Data Architecture View .......................................................................... 111 5.1.3 Infrastructure Future ................................................................................... 115 5.1.4 Security .......................................................................................................... 115

5.3 Component-Based Architectures Future............................................................ 116 5.4 Federated Architectures Future.......................................................................... 116 5.5 Using Reference Models and Reference Architectures Future.......................... 116 5.6 Issues with Legacy Systems Future ................................................................... 116 5.8 Achieving Flexibility to Incorporate New Technology - Future .......................... 126 5.9 Sequencing Plan Future ..................................................................................... 126

6. Using the Enterprise Architecture............................................................................... 127 6.1 Compliance within the Service or Agency Future ............................................. 127 6.2 EA Use in Transformation - Future ...................................................................... 127

6.2.1 Financial......................................................................................................... 127 6.2.2 Business Operations EA Use in BPR and Process Improvement Future. 128 6.2.3 Technical EA Use in Systems Design and Engineering FUTURE.......... 129 6.2.4 Organizational EA Use in Organizational Change Management ............... 129

7. Evaluating EA............................................................................................................. 130 7.1 EA Maturity Models ............................................................................................. 130 7.2 Seven High-Level EA Evaluation Criteria ........................................................... 132 7.3 Assessment of EA Products - Future .................................................................... 134 7.4 Assessment of EA Development Processes - Future ............................................ 134 7.5 Assessment of EA Usage Processes Future ....................................................... 135 7.6 Assessment of EA