Enterprise Architecture

Enterprise Architecture

1. Where it is applicable

   • public/private sector organisation
   • Entire business/corporation
   • Part of a larger enterprise
   • multiply outsourced business operation

2. What is it?

   • coherent whole of
     • Principles
     • Methods
     • Models
     • used in the design and realisation of
       • organisational structure
       • information systems
       • infrastructure

3. Why consider it

   • Information systems must keep pace with those changes

4. Key Concepts

   • Linking Business Goals with Information System
   • "as is" to the "to be"
   • Used to capture significant representations of the architecture
   • Used to enhance communication

5. EA Frameworks

   • Zachman Framework
   • Federal Enterprise Architecture Planning
   • Enterprise Architecture Planning
   • TOGAF
     • Architecture Development Method (ADM)

6. ADM Phases

   • 1. Preliminary
     • outling ''as-is" and "to-be
   • 2. Business Architecture
     • Business Strategy
     • Governance
     • Organisation
     • Business Processes
   • 3. Data and Application Domains
     • Architecture of IT applications deployed
   • 4. Technology Architecture
     • Describes software and hardware capabilities
   • 5. Opportunities and Solutions
   • 5. Migration Planning
   • 6. Implementation Governance
   • 7. Architecture Change Management

7. Potential Pitfalls of EA modelling

   • Lack of senior managment commitment
   • Lack of governance
   • "Overscoping" the projects
   • Failure to establish good communication mechanisms