This Episode outlines systems analysis methods within software development, starting with a fundamental definition of software and the stages of its creation: analysis, design, implementation, evaluation, and maintenance. It explains key testing strategies like black box, white box, alpha, and beta testing, followed by an overview of prominent software development lifecycle models. These models include the waterfall model, emphasizing sequential stages; the spiral model, which iteratively refines prototypes; and agile methodologies, focusing on rapid, incremental development. Finally, the episode introduces extreme programming as a type of agile development and rapid application development (RAD), highlighting their respective advantages, disadvantages, and appropriate use cases.