This presentation provides a comprehensive overview of Agile methodology and its application within the software development and testing lifecycles. It covers the core principles of Agile, including iterative development, collaboration, and responsiveness to change. The presentation also explores the phases of the Software Development Life Cycle (SDLC) and Software Testing Life Cycle (STLC), illustrating how Agile practices are integrated into each stage. Key topics include sprint planning, continuous integration, test automation, and the role of cross-functional teams. Ideal for students, developers, testers, and project managers, this presentation serves as a practical guide to understanding and implementing Agile in real-world software projects.