A Key objective of the Phase B is reuse of the existing software components available in the existing applications.

As a Part of the Phase B, the Architecture team will need to consider what relevant Business Architecture resources are available from the enterprise continuum

Knowledge of Bsiness architecture is a prerequisite for architecture work in any other domain.

The normal approach to Target Architecture development is top-down

In Practical terms, the business architecture is also often necessary as a means of demonstrating the business value of subsequent Technical Architecture work to key stake holders