It's important to note that the software development life cycle is not the same as project management. SDLC is a framework for developing software, while project management is a process for managing all aspects of a project.
Project managers use tools like Gantt charts and task lists to track milestones and deadlines. They also work with developers to ensure that projects are on track and within budget.
While SDLC and project management are two different concepts, they often work together. In fact, many project managers use SDLC as a guide for managing their projects.