CEISAR - Center of Excellence in Enterprise Architecture > Describe the Enterprise > Chapter 4 : Architecture
Chapter 4 : Architecture
Architecture is defined as what can be Shared.
Business Architecture includes:
- Shared Business Entities
- Shared Business Functions
- Shared Business Process Models
- Shared decomposition of Business Process and Entity Domains.
Organization Architecture includes:
- Shared Organization Entities: Organization Actors, Organization structure
- Shared Organization Functions like Security and Activity assignment
- Shared decomposition of Organization Process and Activity Domains.
IT Architecture includes:
- Shared Block Cartography with Shared Interfaces
- Shared Classes
- Shared Software Services
- Shared Data
- Development Architecture: languages and Development tools (specification, development, test, integration, documentation, …)
- Operation Architecture: common tools and Resources to execute software hardware, network, OS, DBMS, middleware, deployment tools
Shared Architecture Governance and Approach
Architecture follows same decomposition than Enterprises.
A Group may define a Group Architecture applied to all Companies in the Group.
Each Company may also define a Company Architecture which is based on Group Architecture, and adds sharable elements at its level.