Selecting an Enterprise Architecture Framework_02!20!12v1.1

7/31/2019 Selecting an Enterprise Architecture Framework_02!20!12v1.1

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Enterprise ArchitectureExplaining the What, and Why of the EnterpriseArchitecture Frameworks


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The phrase Enterprise Architecture was first used in 1987 byJohn Zachman in an IBM Systems Journal article titled A

Framework for Information Systems Architecture, which is all

pretty academic.

Intended to address two problems System complexity - organizations were spending more and

more money building IT Systems

Poor business alignment - organizations were finding it more

and more difficult to keep increasingly expensive IT systemsaligned with business needs

Enterprise Architecture Framework


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Dictionary: framework: n. 1) A structure for supporting or enclosingsomething else, especially a skeletal support used as the basis forsomething being constructed; 2) a simplifieddescription of acomplex entityor process (syn: model)

EA Context: An EA framework is a model or outline that provides thelogical structure within which EA deliverables will be created andrelated to each other

Intent of EA Framework: Provide a simplified context for the scope,analysis and structure of an enterprise and its components

Examples: Zachman Framework for Enterprise Architecture, TOGAF,

DODAF, MODAF, FEAF

What is an EA Framework?


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There are many successful Enterprise Architecture Frameworksin use today can we benefit from this accumulation ofknowledge?

Can we examine in detail the EA Frameworks of others?

Do we have to reinvent the wheel?

What reference materials are available?

This is why TOGAF exists and is freely available.

TOGAF is a framework a detailed method and set of

supporting tools for developing an enterprise architecture.

But where do you start?


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We use the framework to view and understand the enterprise. This view is actually made up of several views, (Business, Data,

Application, and, Technology views.

Our view of the enterprise is shaped by our perspective, as viewed from

the role we play within the enterprise.

The Value of Enterprise Architecture is in the Relationships

Enterprise Architecture is more than a collection of the constituent

architectures (Business, Data, Application, and Technology). The

interrelationships among these architectures, and their joint properties,

are essential to the Enterprise Architecture.

What is an EA Framework?


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Business Manager or User

an organizational

structure

collection of business

services/processes

Software Developer

set of application

functions

collection of software

systems or

components

Design or Build Engineer

collection of

infrastructure

components and

interfaces

Enterprise Perspective

I see the enterprise as a.


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So who is right?

They are all right!

EAs role is to organize all the views against a common EA framework so

everyone can understand each others perspective.

Providing the common language between the business and IT.

Enterprise Perspective


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Where does TOGAF fit? TOGAF is a mature EA framework that provides organizations with a step by

step method of creating an enterprise level architecture. It defines placeholders for defining things common to all organizations

delivering services in an enterprise environment .

Business architecture The strategy, governance and business processesgoverning how the business goes about its work

Data architecture A definition of the organizations logical/physical data stores,

meta data and management resources Application architecture Blueprints for how software systems interact with

each other, are deployed and their relationships to business processes (mappedin the business architecture)

Technology architectureThe assets of an organization used to deliver its ITcapabilities. Logical software models, hardware resources, support

requirements, data/application capabilities etc. Includes things like networktopologies, comms, standards etc.


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Putting it all together


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Or maybe this.


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Benefits of Adopting TOGAF

There are many benefits in adopting a standardizedarchitecture framework rather than rolling our own, here are

but a few:

reduced costs to maintained

shorter ramp-up times

readily available trained technical resources

available ecosystem of standardized artifacts, and automation tools


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What if

Another approach to evaluating the importance of EAFramework is by asking the question, What if we didnt have

EA Framework?


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Questions?


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Ok here is the TOGAF framework

Documents

Selecting an Enterprise Architecture Framework_02!20!12v1.1