The document discusses systems development methodologies. It describes the traditional systems development life cycle (SDLC) which includes 7 phases: planning, analysis, design, development, testing, implementation, and maintenance. It also discusses component-based development approaches like rapid application development, extreme programming, and agile methodology which focus on building reusable software components. The document provides an example of the Centers for Disease Control using a service-oriented architecture to integrate different IT systems and information to help save lives.