一个好的分层式结构，可以使得开发人员的分工更加明确。一旦定义好各层次之间的接口，负责不同逻辑设计的开发人员就可以分散关注，齐头并进。例如UI人员只需考虑用户界面的体验与操作，领域的设计人员可以仅关注业务逻辑的设计，而数据库设计人员也不必为繁琐的用户交互而头疼了。每个开发人员的任务得到了确认，开发进度就可以迅速的提高-A good hierarchical structure, can make the division of labor more clear. Once the interface between the various levels of definition, responsible for different logic design developers can be scattered attention, go hand in hand. For example, UI staff only need to consider the user interface experience and operation, the field of designers can only focus on business logic design, and　designers do not have to cumbersome user interaction and a headache. The task of each developer has been confirmed, the progress of the development can be improved rapidly