An information system engages in a communications session with a client to process a workflow. A context object stores information describing the session. Transfer objects store data utilized to process the workflow. A client action causes the information system to provide the transfer objects to a workflow engine. The workflow engine processes actions in the workflow utilizing the transfer objects. The information system selects among multiple screen definitions for the client based in part on the context. A transformation module filters the data in the transfer objects to isolate the data that are utilized by the screen definition. The screen definition and filtered data are provided to the client.