Scope Definition is the process of clearly outlining the boundaries and deliverables of a project. It involves identifying what is included and excluded in the project, ensuring that all stakeholders have a shared understanding of the project's goals and objectives. This clarity helps prevent scope creep, which can lead to delays and increased costs. A well-defined scope typically includes specific tasks, timelines, and resources needed to complete the project. By establishing these parameters, project managers can effectively allocate resources, monitor progress, and ensure that the project stays on track to meet its intended outcomes.