Project requirements are specific tasks, features, or functions that must be completed for the project to be considered done. While many other subtasks and decisions will happen along the way, these requirements are the must-haves that will make or break the project's outcome. As the project manager, you'll work together with key stakeholders to determine what's required to make the project a success. This list of project requirements will help guide everyone else involved in the project, giving them a clear sense of what needs to be done.