Components of enterprise architecture

architectural principles.
reference architectures
as-is/to-be business process maps.
as-is/to-be organisation/roles.
as-is/to-be data and process flows through systems (from actors through to end nodes).
as-is/to-be functionality (inc. requirements for to-be world)
as-is/to-be system landscape.

as-is/to-be technology landscape.
as-is/to-be infrastructure architecture.

Next layer down:

Domain Model (static, dynamic)
Business Rules
Software Architecture
Infrastructure Architecture
Integration Architecture
Application Architecture (functions mapped against system)
Deployment Model
Workflow Specification

Layers below this are construction type activities. First punt, I'm sure there are more elements. I guess we are answering who, what, where, when, how. Of course Zachmann would suggest the above are broken down into 36 cells of normalised deliverables. I'm not sure I buy this type of model yet.