微软应用软件架构设计指南2.0 三种定义(三) The software architecture of a program or computing system is the structure or structures of the system, which comprise software elements, the externally visible properties of those elements, and the relationships among them. Architecture is concerned with the public side of interfaces; private details of elements- details having to do solely with internal implementation -are not architectural微软应用软件架构设计指南2.0 • 三种定义（三） “The software architecture of a program or computing system is the structure or structures of the system, which comprise software elements, the externally visible properties of those elements, and the relationships among them. Architecture is concerned with the public side of interfaces; private details of elements— details having to do solely with internal implementation—are not architectural