Artifact: Use-Case Model
This artifact captures a model of the system's intended functions and its environment, and serves as a contract between the customer and the developers.
Domain:  Requirements
Work Product Kinds:  Model
Purpose

The use-case model is useful when considered together with its related artifacts: Artifact: Use Case and Artifact: Actor.

In general, a use-case model presents an overview of the system, serving as basis for an agreement between customers and project team of the intended functionality for the system. It also helps to drive the various tasks in the software development lifecycle.

Relationships
Tailoring
Representation Options

Tailor to support project needs. Projects may not include the use-case model as one of the work products being created. Identifying actors and use cases, then describing the use-cases scenarios are recommended tasks though. 



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