The Business Architecture definition allows you to establish the overview of information contained in the Business layer of your Enterprise Architecture.
You can describe the baseline – or current-state – of the architecture.
You can also specify candidate Architecture Building Blocks (ABBs) and Solution Building Blocks (SBBs), as well as ABB models (such as Business Concept diagrams, Business Process diagrams) and SBB models (such as Network Concept diagrams) that will bring the Business Architecture into the future.