Architecture Types

IT Architecture is comprised of three different types of architecture:

1. Enterprise Architecture: global


2. Cross-Domain Architectures: cross-functional or cross-organizational


3. Software Architecture: project-centric

These are represented by the three yellow books horizontally placed on the left side of the top shelf.

• Enterprise Architecture (global) -- consists of:
  • Business Architecture
    • processes
    • workflows
  • Data Architecture
    • entities or "things"
    • relationships
    • metadata
  • Application Architecture
    • partitioning
    • integration
  • Technology Architecture
    • infrastructure -- foundation
    • applications -- layered on top of infrastructure
      • built -- developed
      • bought -- purchased
    • business intelligence -- layered on top of applications


• Cross-Domain Architectures
  • cross-functional or cross-organizational
  • domain specific -- e.g.,
    • security architecture
    • network architecture
    • "customer" architecture


• Software Architecture
  • project-centric
  • application specific -- e.g.,
    • accounts payable
    • order entry
    • sales management