There are two kinds of contexts in the Branch Transformation toolkit. One is the context on the application presentation server, which is accessible to the Toolkit Struts extension, and the bean invokers. The other is the context on the application logic server which is accessible to the Business Process Component and single action EJBs. The contexts on the application logic server are called CHA contexts.
When the user successfully signs in, the session between the client and the application logic server establishes, and the CHA session context on the application logic server establishes.
Note that the work area is a feature of WebSphere(R) Business Integration Server Foundation (WBISF). See the production documentation of WBISF for more information about the work area.