Contents Preface xi Acknowledgments xvii 1 Introduction 1 1.1 What is Software Architecture 1 1.1.1 What software architecture is not 4 1.1.2 Attributes of software architecture 5 1.1.3 Definitions of other key architecture-related terms 7 1.1.4 Other types of architectures 8 1.2 Why Architect? 10 1