Why is it important to identify Classes early in the Unified Process methodology? Solution it is also known as software development process which the development is done incrementally in step by step manner =>classe plays main role in the unified process,because unified process uses object oreinted techonology for analysis and desing of the software architecture.but before doing this he want build classes according to the client requirement in the architecture design. if we do analysis and design with proper define of classes the whole architecture may get in to trouble.