The document discusses the Software Development Life Cycle (SDLC), which is a process that consists of detailed planning for developing, maintaining, replacing, and enhancing software within an organization. The SDLC defines a methodology with phases including planning, analysis, design, implementation, and testing/maintenance. The planning phase involves feasibility studies and creating a project plan. The analysis phase breaks down requirements and gathers stakeholder needs. The design phase determines if development is internal or outsourced. The implementation phase builds, tests, and trains users on the new software. Testing and maintenance identifies and fixes bugs while accommodating new requirements.