Software Methods and Tools Outline

• What is software architecture? • Why do we need software architecture? • How do we design software architecture? • Architecture patterns and styles • Object-oriented design and functional design 2 What is software architecture? (in traditional software engineering) • The top-level decomposition of a software system into major sub-systems together with a characterization of how these sub-systems interact is called software architecture. • Software architecture is top-level design or global design! • Software architecture is the result of the initial design process. 3 What is software architecture? (in current research) • The software architecture of a program or computing system is the structure or structures of the system, which comprise software components, the externally visible properties of those components and the relationships among them.- [Bass et al., 1998