What is the difference between a milestone and a deliverable?

• A. Deliverable is tangible or verifiable; milestone is a significant project event or point in time.
• B. Deliverable is a milestone; milestone is a product.
• C. Deliverable is intangible; milestone is a risk.
• D. Deliverable is a tangible or verifiable product; milestone is a significant project event or point in time.

Answer: (D)

In project work, a deliverable is something produced or delivered to satisfy a requirement. It can be a tangible item, like a built component, or a verifiable output, such as a completed document, report, or software module—all of which can be inspected and accepted. A milestone, on the other hand, is a significant point in the project timeline—an event or decision that marks progress, such as completing the design or reaching a phase end. It doesn’t produce a product itself.

So the best way to see the difference is: deliverables are the actual outputs you deliver, while milestones are the scheduling markers that show progress along the way.