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An Introduction to Enterprise Architecture
Iakov Fedoseenko
London Metropolitan University
16th February 2017
Agenda
Outline
• Where did Enterprise Architecture come from?
• What is Enterprise Architecture?
• Why it is important?
• How to develop Enterprise Architecture?
An Introduction to Enterprise Architecture
IBM Systems Journal, 1987
“A framework for information systems architecture”:
“With increasing size and complexity of the implementations of information
systems, it is necessary to use some logical construct (or architecture) for
defining and controlling the interfaces and the integration of all of the
components of the system.”
“The cost involved and the success of the business depending increasingly on its
information systems require a disciplined approach to the management of those
systems.”
History
An Introduction to Enterprise Architecture
John A. Zachman
SOURCE: Zachman International https://www.zachman.com/
Definition
An Introduction to Enterprise Architecture
What is EA?
Enterprise architecture (EA) is
“a conceptual blueprint that
defines the structure and
operation of an organization.”
SOURCE: Techtarget http://searchcio.techtarget.com/definition/enterprise-architecture
Value
An Introduction to Enterprise Architecture
Why it is important?
EA was as a response to two main
concerns:
Growing complexity of IT
(increased cost of
building IT systems)
Growing dependency of
business success on IT
(IT systems do not
support business needs)
EA helps to:
Move from Fragmented
Processes to Integrated
Environment
(IT is responsive to change
and support business
strategy)
Ensure Business Success
(effective management and
exploitation of IT is key for
business execution)
Originally (Reactive) Today (Proactive)
SOURCE: Zachman International https://www.zachman.com/
SOURCE: XKCD https://xkcd.com/927/
Frameworks
An Introduction to Enterprise Architecture
How standards proliferate:
An Introduction to Enterprise Architecture
SOURCE: Zachman International https://www.zachman.com/
The Zachman Framework
TOGAF 9 divides an enterprise
architecture into four domains…
… and describes a process for developing
and managing the lifecycle of an EA
SOURCE: The Open Group http://pubs.opengroup.org/architecture/togaf9-doc/arch/index.html
The Open Group Architecture Framework (TOGAF)
An Introduction to Enterprise Architecture
The Open Group is a global consortium (450+)
SOURCE: The Open Group http://www.opengroup.org/open-group-publications
ArchiMate
An Introduction to Enterprise Architecture
ArchiSurance Example
Alternative Frameworks
An Introduction to Enterprise Architecture
The Zachman Framework for Enterprise Architectures
The Open Group Architecture Framework (TOGAF)
ArchiMate (modelling language)
The Federal Enterprise Architecture
The US Department of Defense Architecture Framework (DODAF)
• The British Ministry of Defence Architecture Framework (MODAF)
• The Rail Architecture frameworK (TRAK)
• The Canadian Department of National Defense Architecture Framework (DNDAF)
• The NATO Architecture Framework (NAF)
• others
BAD NEWS
Difficult to choose one
single framework
GOOD NEWS
Methodologies can
complement each other
Frameworks
An Introduction to Enterprise Architecture
Methodologies are quite different from each other, both in
goals and in approach
Summary
An Introduction to Enterprise Architecture
Blueprint of an organisation
Different frameworks can be used as a toolkit
Started in 1987 (John A. Zachman)
Adds value to the business by:
• Providing structured approach to IT
• Reducing system complexity
• Aligning IT with business strategy
• Making enterprises responsive to change
Where to find more?
An Introduction to Enterprise Architecture
BizzDesign Blog
ArchiMate® 3.0 -
Strategy
Concepts and
Capability-Based
Planning
http://blog.bizzdesign.com/archima
te-3-strategy-concepts-and-
capability-based-planning
https://hbr.org/product/enterp
rise-architecture-as-strategy-
creating-a-fou/an/8398-HBK-
ENG
https://www.youtube.com/watch?v
=qDI2oF1bASk&t=1s
~5 min ~1 hour ~5 hours
Any questions?
An Introduction to Enterprise Architecture
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