A "Deliverable" is a specific output or result that is produced as part of a project or task. It can take various forms, such as a report, a product, or a service, and is typically defined in the project plan. Deliverables are essential for measuring progress and success, as they provide tangible evidence of work completed. In project management, deliverables are often categorized as either internal or external. Internal deliverables are meant for the project team, while external deliverables are intended for clients or stakeholders. Clear identification of deliverables helps ensure that everyone involved understands expectations and timelines, contributing to overall project success.