Spend test effort wisely - "Impact based focus"

Focus on the critical quality factors. The distribution of test effort should be non-uniform. Spend more effort on critical features and attributes and less on the less-critical features.

Formally guarantee test adequacy

Objectively prove that test cases are sufficient, to ensure that testing is adequate. The key to effective testing is ensuring that the test cases designed are indeed enough and no more is needed.

Quantify product risks clearly

Testing is not about just discovering defects, it is about de-risking delivery. It is about assessing risks as early possible in the SDLC to enable us to take appropriate actions to delivery quality on time.

Achieve cost-effective verification and validation

Testing is expensive and exhaustive testing is impossible. Quality need not be assessed only by dynamic examination of behavior (via testing); defects can be detected in a staged manner by a judicious application of early verification and validation later.