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EA Outcomes & Value
EA Components
•••
Need for a more effective
and standardized method of
presentation
City districts reorganized according to priorities
Blueprint-based management at time of constructing a new building
EA is a base document/blueprint to help effective and systematic IT system development and management
Apply
architectural
techniques
and approach
to the area of IT
systems
City Design Building Design
City Optimization
Building Optimization
City Development
Building Development
GovernmentIT System
Individual Systems
Overall Architecture Unit System Design
Government IT Optimization
Unit System Optimization
System DevelopmentUnit System
Development
Enterprise is an organizational entity comprised of business functions, processes, and resources to pursue its vision and goals
•Mission and Business
•Business Information Resources
•IT Systems to Support Business Processes
•Technical Components to Build IT Systems
• Enterprise Definition• Enterprise Scope• Architecting Target
• Visualization for easier enterprise recognition by business managers or other employees
• Definition of ‘Architecture’ in Korean language
(1) Architectural technique
(2) Architectural style
(3) Structure, Framework, Organization, Design
• Definition of ‘Architecture’ in English
The art, science and profession of designing buildings,
ships and other large structures and supervising their
construction
• ‘Architecture’ in Wikipedia :
Architecture is both the process and product of
planning, designing and constructing space that reflects
functional, social, and aesthetic considerations.
+=
EA defines business and IT blueprints/architecture in each different view using abstraction
Level Perspective
Components Perspective
Business Application Data Technology
Executive
Director
Manager
System A
Projects
System B
Projects
System C
Projects
Head Office
ZachmanSet of primitive, descriptive artifacts that constitute the knowledge infrastructure of the
Enterprise
U.S. Federal
Government
Integrated framework for evolving or maintaining existing information technology and acquiring
new information technology to achieve the agency's strategic goals and information resources
management goals (ITMRA, 1996)
U.S. CIO Council
A strategic information asset base that defines the business, information necessary to operate
the business, technologies necessary to support business operations, and transitional processes
for implementing new technologies in response to changing needs of the business.
Meta GroupThe holistic expression of the enterprise’s key business, information, application, and technology
strategies and their impact on business functions and processes.
Japan
Government
A method to improve business and IT systems by modeling and managing organization’s entire
business and systems in an unified fashion.
Korea
Government
A framework and method to analyze and optimize organization’s components (business,
application, data, technology, security) based on standardized rules and processes
To view organization’s resource in its entirety, we align enterprise resources (vision, business function/process, data, application, technical infrastructure, etc.) and manage their changes
Vision & Strategy
Organization
Business Functions & Process
Data, App, Technical Architecture
TRM & Standards Profile
In 1987 John Zachman raised the need for a conceptual framework for the integration and linkage
of information systems and named it 'Architecture Framework'
Zachman ‘A Framework for Information systems architecture’ (1987)
EA initially presented a solution to the increasing complexity of information systems
• Simple expression
• Expansion of communication
• Effective acceptance of changed requirements
Began to be used as a tool for systematic management of IT in the 1990s
In the 2000s EA was extended to include the whole enterprise as a focus area
Enterprise Architecture is an organized results of human thought about complicated problem
areas (in this case, the enterprise)
Is EA about business or technology issues?
Business function requirement
changes
Sudden change in management
strategy
IT budget limitations
Business method changes
Management Environment
Changes in IT elements
From C/S to web environment
Even more demanding business support requirements
Strong evaluation requirements
for IT effectiveness
Change in role ofIT department
Increased IT complexity
IT Environment
Based on an established standard EA connects organizational resources and tasks vertically from the vision and strategy level downwards. It also provides a single view of the present and future states of the organization
EA Concept & Necessity
EA Components
• Increasing IT investment and level of IT resources complexity
• IT development optimized in unit business/system’s level
• Conflict of technical specifications /Lack of standards
• Difficulty in assessing current IT resources
• Less system integration, non-reuse of components
Commanding view of agency’s IT plans
and resources
Standard-based
technical acquisition
Easier identificationof redundant IT resources
EA DB
IT Status
Design Standards
Design
Current Target
Maintenance
System
Optimization
Increased ROI
Technical incompatibilities are substantially reduced with EA, an ideally coordinated IT plan
that puts IT standards and guidelines in practice
Agency Information Systems
Connectivity and CompatibilityAbility to link to other components
inside and outside of the organizational environment and to
share any type of information across technology components
Other Organization Information Systems
Information
Linkage
Information
Linkage
Info
rmat
ion
Lin
kage
Information resources are organized by user layers (e.g. planners, owners, designer, and
developer), and are managed in a structured manner with EA Management System.
Planner
Owner
Designer
Developer
Business Data Applications Technology
EA can be used as a communication tool, facilitating effective communication and cooperation
between business and IT departments.
Enterprise Architecture defines:
Promotion of better planning
and decision making
• core business processes• common data elements• crosscutting applications• standard system platforms.
Enterprise Architecture identifies:• common system needs that
span multiple business processes
Enterprise Architecture ensures:• Technology aligned with
business requirements
Common Language Seamless
flow
"Customer""Client""User"
?ITILCOBITISO
A new system can be developed using EA without going through the trouble of researching and
analyzing existing systems since EA maintains the latest information on business processes, system
architectures, and functionality and purpose of key applications
Functionality Purpose
Business Processes System Architecture
Organized Enterprise Architecture Information
Allows organizations to
focus efforts of the most
strategic applications and
investment plans
Streamlining of
components
that are
managed
Strategic Plan
Since organization’s IT resources are managed at hand with EA, a new system can be built using pre-
existing system components with a minimal or no modification. EA entails an inventory of key
application that facilitate reuse in new application or in improving application functionality
Existing Application New Application
Individual functional
components
EA Concept & Necessity
EA Outcomes & Value
EA Governance
Organizational structure, process, and systems
Transition Plan
ReferenceModels
EA InformationEA Framework
TADA AA SABA
EA Repository
EA Team EA Guidelines EA Management System
Current and Target Architecture
Mapping and Utilization
A conceptual framework that defines information needed to attain organization’s EA vision, resources of management interest, and their relationships
By range of EA components
By type of management
interest
[Descriptive Framework]
Zachman Framework
[Procedural Framework]
TOGAF
[Framework in a broad sense]
• EA Reference Model defines a set of standard representations and specifications
• Used for developing EA; and for ensuring consistency, uniformity, and interoperability.
Standards/Principles
Construction
IT SystemsDevelopment
Blueprints City/Buildings
EAIT-empowered enterprise
/Unit systems
Reference Models
Standards/Rules
SRM
DRM
TRM
BRM
PRM
Architecture style and model,Blueprint rules and notations
Example: Interface specifications,Communication specifications
Example: Access to sunlight, Solidity of structures
Benefits of Reference Models
BRM SRM DRM TRMPRM
Reference Models
Business Application Data Technology
Owner
Designer
Planner
Developer
Security
EA
Per
spec
tive
Business Application Data Technology Security
PlannerBV1 Organization Chart
BV2 Business Description
AV1 Application Service
Overview/Definition
DV1 Data Model Overview
/Definition
TV1 Infrastructure
Overview/Definition
SV1 Security Policy
SV2 Security Overview
/Definition
Owner
BV3 Business Function
Relationship/Description
BV4 Business Function
Partition/Description
AV2 Application Service
Relationship/Description
AV3 Application Service
Partition/Description
DV2 Conceptual Data
Relationship
/Description
DV3 Data Exchange
Description
TV2 Infrastructure
/ Description
SV3 Security Relationship
/Description
DesignerBV5 Business Process
DesignAV4 Application Function
DesignDV4 Logical Data ModelDV5 Data Exchange Design
TV3 Infrastructure Design/Specification
TV4 System PerformanceDesign
SV4 Management SecurityDesign
SV5 Physical SecurityDesign
SV6 Technical SecurityDesign
Developer BV6 Business ManualAV5 Application Program
ProfileDV6 Physical Data Model TV5 Product Profile SV7 Security Manual
EA metamodel is a set of artifacts which defines architectural information of interest
View
Architectural information is defined in a form of entities and their relationships
Target ArchitectureCurrent Architecture
Agency’s EA components and their relationships are defined according to the Government EA Metamodel
Security
Business
Data
Application
Technical
Business
Data
Application
Technical
Security
Each agency defines its own EA with a reference toGovernment EA Metamodel.
EA transition plan defines projects and action plans for attaining its target architecture.
EA Governance is a base document to ensure effective and efficient EA management
Includes EA management process, and roles and responsibilities of EA team and related business units.
EAMS(EA Management System) is an electronic depository system that stores EA information, and it gives users convenient access to EA information.
< System manager>
<IT planner>
<IT manager>
ArchitecturalInformation
<IT developer>
Change
Analyze
Create
Report
EA Model Repository
BADA
AATA
use
manage
Model Repository
EA Portal
EA Management System
THANK YOU