A deliverable is a project’s output demonstrating the achievement of a result. Deliverables can take many forms, such as test reports, regulatory approvals, working prototypes, or marketing research reports. In the context of product development, deliverables are often specified at critical milestones, such as the product’s commercial launch or the end of a development stage. By providing a clear and measurable goal to be achieved, deliverables help to ensure that projects stay on track and deliver value to the customer.