A project timeline and schedule is a critical document that details what needs to be done and when. It lays out the roadmap for the execution of any given project, providing visibility into milestones, deliverables, and due dates. A successful project timeline and schedule should be easy to understand and communicate, with clear action items, checkpoints, and dependencies identified. It should also be regularly updated as new information arises and changes occur. By ensuring that all stakeholders have access to the same information, a project timeline and schedule can help ensure a successful project execution.