Component-based systems have become increasingly popular approaches to developing complex systems, offering well-formed abstractions, strong potential for reuse, dynamic plug-and-play and sometimes end-user application enhancement. Unfortunately the design, implementation and deployment of components is very challenging, particularly achieving appropriate division of responsibility among components, designing components and implementing components.

Hence, We need a standard representation to exploit the benefits and reusable aspects of software components.

So, UML can model components design and implementation and can be userd as basis for reuse documentation.

Strengths and weakness of UML are discussed along with the intended revisions.