Definition
A document linking requirements with design, implementation and the evidence produced by testing and Validation.
Human Explanation
It shows whether each requirement was designed, implemented and checked.
Why it Matters
Traceability reveals missing coverage and supports a defensible assessment of Validation completeness.
Conceptual Boundary
RTM does not replace requirements, design documents or test records; it connects them.
Practical Perspective
The matrix should be maintained as requirements, design and tests change, rather than completed only at project closure.