A task is a work item that communicates the need to do some work. Each role has its own requirements for a task. For example, a developer uses development tasks to assign work derived from scenarios or quality of service requirements to component owners. The tester uses test tasks to assign the job of writing and running test cases. A task can also be used to signal regressions or to suggest that exploratory testing be performed. Finally, a task can be used generically to assign work within the project.