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Togaf Report

Apr 03, 2018

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    Prepared By: Ernest Cunningham

    Date Prepared: 8 April 2013

    Word Count: 1316

    An Introduction to

    The Open Group Architecture Framework

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    Executive Summary

    The Open Group Architecture Framework (TOGAF) is an industry leading enterprisearchitecture (EA) developed by a consortium of global organisations and institutions whoare leaders in their elds.

    This document aims to give you an understanding of:

    What is TOGAF.

    Its origin and future.

    How is it used and who uses it.

    How it relates to EA.

    How it relates to IT.

    An Introduction to The Open Group Architecture Framework 1

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    What is TOGAF

    TOGAF is a comprehensive framework for developing enterprise architecture.

    The Open Group (TOG) is a consortium of over 400 organisations operating throughoutthe world. They come from diverse sectors such as hardware and software vendors,training, nancial and education institutions as well as various government departments.

    TOG is responsible for business process standard specications and certication.Covering enterprise architecture and management, UNIX specications and standards aswell as various service and security frameworks.

    An Introduction to The Open Group Architecture Framework 2

    TOG Member Organisations

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    What is Enterprise Architecture

    EA describes an enterprise current state. This includes:

    What, when and how an enterprise does business.

    Its governance structure.

    The software, hardware, tools used.

    The data and business models and analysis of them.

    The business vision and goals.

    An enterprise is any organisation or part thereof (or multiple organisations) that sharecommon business or operational goals. According to the current TOGAF manual:

    TOGAF denes enterprise as any collection of organizations that has acommon set of goals. For example, an enterprise could be a government agency, a whole corporation, a division of a corporation, a single department,or a chain of geographically distant organizations linked together by commonownership.

    The term enterprise in the context of enterprise architecture can be used to denoteboth an entire enterprise encompassing all of its information and technology services,processes, and infrastructure and a specic domain within the enterprise. In bothcases, the architecture crosses multiple systems, and multiple functional groups withinthe enterprise. (Open Group (Organization), 2011, p. 5)

    The practice of developing EA

    TOGAF denes a framework for developing EA. In practice, developing EA helps youexecute change toward your desired business vision and outcomes while reacting tomarket forces in a planned and structured manor.

    TOGAF will tell you what to do but not how you do it and provides you with usefulchecklists and meta models

    An Introduction to The Open Group Architecture Framework 3

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    The Origin and Future of TOGAF

    The rst version of TOGAF was released in 1995. It was based on the Technical Architecture Framework for Information Management (TAFIM) developed by the United

    States Department of Defence (DoD).

    The DoD gave The Open Group explicit permission and encouragement tocreate TOGAF by building on the TAFIM, which itself was the result of many

    years of development effort and many millions of dollars of US Government investment. (Open Group (Organization), 2011, p. 3)

    TAFIM vs TOGAF

    TAFIM provided enterprise-level guidance for the evolution of the DoDTechnical infrastructure. It identies the services, standards, concepts,components, and congurations that can be used to guide the development of technical architectures that meet specic mission requirements. ("TAFIM -Wikipedia, the free encyclopedia", n.d., para. 2)

    While TAFIM focussed on the architecture of information systems, TOGAF expanded on itto also include:

    Architecture vision.

    Business and technology architecture.

    Implementation governance.

    Architecture change management.

    An Introduction to The Open Group Architecture Framework 4

    http://en.wikipedia.org/wiki/Requirementshttp://en.wikipedia.org/wiki/Requirementshttp://en.wikipedia.org/wiki/Infrastructurehttp://en.wikipedia.org/wiki/Infrastructure
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    TOGAF Development Timeline

    Between 1995 - 2001 TOG released a new version each year marking TOGAFmilestones. By v8.0 in 2003, TOGAF had developed into a matured enterprise framework

    leading on to less frequent updates.

    YEAR VERSION DETAILS

    1986 DoD starts developing TAFIM

    1995 v1.0 X/Open Architectural Framework proof of concept

    1996 v2.0 Proof of application

    1997 v3.0 Relevance to practical architectures

    1998 v4.0 Enterprise Continuum1999 v5.0 Architecture Requirements

    2000 v6.0 Architecture Views

    2001 v7.0 Technical Edition

    2003 v8.0 Enterprise Edition

    2006 v8.1 Enterprise Edition updated

    2009 v9 Enterprise Edition updated

    2011 v9.1 Enterprise Edition updated

    TOGAF Future Direction

    Bringing TOGAF to maturity took eight years and eight versions. TOGAF is now in anevolutionary state where its focus is now on adapting to the business world and thechanging needs of EA. One area that is being discussed as a future inclusion is theenhancement of Quality of Service.

    An Introduction to The Open Group Architecture Framework 5

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    How is it used and who uses it.

    As stated earlier in this document, TOGAF is used by enterprise architects to design thearchitecture of an enterprises future state and plan and manage the evolution to its future

    state.

    TOGAF is based around its Architecture Development Model (ADM).

    The ADM can be broken down to to seven areas of concern:

    Preliminary Phase

    Architecture Vision

    Business, Information Systems and Technology Architecture

    Solution Selection and Implementation Planning

    Governance

    Change Management

    Requirements Management

    TOGAF ADM (Open Group (Organization), 2011, p. 48)

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    Preliminary Phase

    The Preliminary phase is where you dene what the enterprise does, how it does it, andunderstand the current organisational architectural frameworks.

    This Preliminary Phase is about dening where, what, why, who, and how wedo architecture in the enterprise concerned. (Open Group (Organization),

    2011, p. 58)

    An Introduction to The Open Group Architecture Framework 7

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    Architecture Vision

    The Architecture Vision phase is about:

    Dening the scope.

    Identifying stakeholders.

    Communicating the Architecture Vision.

    Getting approval.

    Besides developing an overall Architecture Vision, this phase is about stakeholder buy-in. This is done by identifying and communicating how the new EA aligns with thebusinesses strategic objectives and the benets to be achieved through itsimplementation. This includes benets to the enterprises bottom line and improvementsto future capability.

    An Introduction to The Open Group Architecture Framework 8

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    Business, Information Systems and Technology Architecture

    The Business, Information Systems and Technology Architecture is driven by businessand operational requirements.

    Each architecture addresses specic areas of the enterprises requirements:

    Business Architecture

    Requirements dened by the enterprise strategy, governance, operational,and key business processes of the aspired future state. The decisions hereare used to identify the requirements of the Information Systems and

    Technology Architectures. Therefor, this is the rst architecture to bedened.

    Information Systems Architecture

    Develop the Target Information Systems (Data and Application) Architecture, describing how the enterprises Information Systems Architecture will enable the Business Architecture and the Architecture Vision... (Open Group (Organization), 2011, p. 94)

    What data to collect, the tools/applications used, how data is stored andmanipulated to meet the business architecture requirements.

    An Introduction to The Open Group Architecture Framework 9

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    Technology Architecture

    The software and hardware used in the enterprise to meet the businessarchitecture requirements.

    Solution Selection and Implementation Planning

    This phase is about getting into specics:

    Generating an Architectural roadmap (planning for change).

    Create the project implementation plans

    Plan specic projects based on requirements.

    Identifying the appropriate technologies. Cost benet analysis.

    The process requires the architect to always be reviewing the plans and decisions againstthe architecture vision and requirements.

    An Introduction to The Open Group Architecture Framework 10

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    Implementation Governance

    Implementation governance runs parallel to development and implementation of the EA.

    Its purpose is to ensure:

    Specic projects continue to t the EA requirements.

    Budgets are tracked.

    Issue resolution

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