forward traceability vs backward traceability
Mapping test cases to requirements are
called Backward Traceability Matrix.
It is used to ensure whether the current
product remains on the right track.
It makes sure that we are not expanding
the scope of the project by adding
functionality that is not specified
in the requirements.
Mapping requirements to test cases is
called Forward Traceability Matrix.
It is used to ensure whether the project
progresses in the desired direction.
It makes sure that each requirement
is tested thoroughly.