A work item is a database record which Visual Studio Team Foundation uses to track the assignment and state of work. The MSF for Agile Software Development process defines five work items to assign and track work. These five work items are the scenario, quality of service requirement, task, bug, and risk.
Work products are files, documents, specifications, binaries, parts, and other tangible items that are necessary to complete activities and build the product. Many times the creation of one work product is dependent on the completion of another work product.
User Interface Flow Model
Domain Model
