Ken Pugh takes you beyond thinking of design patterns as “solutions to a problem in a context.” Patterns are really about handling variations in your problem domain while keeping code from becoming complex and difficult to maintain as the system evolves. Ken begins by describing the classic use of patterns. He shows how design patterns implement good coding practices and then explains key design patterns including Strategy, Bridge, Adapter, Façade, and Abstract Factory. In small group exercises, learn how to use patterns to create robust architectures that can readily adapt as new requirements arise. Lessons from these patterns are used to illustrate how to do domain analysis based on abstracting out commonalities in a problem domain and identifying particular variations that must be implemented. Leave with a working understanding of what design patterns are and a better way to build models of your application domains.