The significance of the Software Development Lifecycle (SDLC) lies in its structured approach to software development, providing a clear framework for planning, creating, testing, and delivering software. The lifecycle includes distinct phases such as requirements analysis, design, development, testing, and deployment. Adhering to the SDLC ensures that software quality and performance are maintained, facilitating risk management, better resource allocation, and improved project timelines. This systematic process enhances collaboration among team members and stakeholders.