The Software Development Life Cycle (SDLC) is a structured process used by software developers and project managers to design, develop, test, and deploy software applications. SDLC provides a roadmap for managing the entire lifecycle of a software project, from initial concept through to final deployment and maintenance. The SDLC is typically divided into several phases, including planning, requirements analysis, design, implementation (coding), testing, deployment, and maintenance. Each phase has specific deliverables and milestones, ensuring that the project stays on track and meets its objectives.

Different SDLC models exist, such as Waterfall, Agile, Spiral, and V-Model, each with its own approach to managing the development process. For example, the Waterfall model follows a linear, sequential approach, while Agile emphasizes iterative development and continuous feedback. The choice of SDLC model depends on factors like project size, complexity, and requirements. By following a well-defined SDLC, teams can improve the quality of their software, reduce risks, manage resources effectively, and deliver products that meet customer needs.