The software development life cycle (SDLC) is a process for designing, developing and deploying software. It is a method for working with software developed from the beginning to the end of its life cycle.
The SDLC could be better for working with software, but it is still helpful for many companies. This section will introduce you to the 7 phases and provide examples of how to use each step in your SDLC project.

1. Planning
2. Analysis
3. Design & Prototyping
4. Development
5. Testing
6. Deployment
7. Operation & Maintainance

The first phase is the requirement gathering phase, where the client asks for a list of tasks he wants to be done by an individual or team. Then the project manager develops a short list representing what they want to do while the rest of the team has to complete all these tasks.
This short list then becomes a strategy document which translates that strategy into actual requirements for the software development process. They can use this document as a roadmap to track their progress toward success during each step in SDLC.