Architecture components are: data, process and network. Corresponds to the “what”, the “how”, and the “where”

Architecture roles and perspectives. Add the role or perspective owner:

1. Business scope: Owner

2. Business model: Architect

3. IS model: Designer

4. Technology model: Builder

5. Technoloyg defintion: Contractor

6. IS: User

Evolves from top to bottom

Each move from top to bottom involves a transformation of the preceding model. More than just “adding”.

Also evolves a row at a time ideally simultaneously prior to moving down a row. Helps insure against inconsistencies.