A high-level description of the test levels to be performed and the testing within those levels for an organization or program (one or more projects).

A test strategy provides a high-level description of the test levels to be performed (unit, integration, system, acceptance) and the testing activities within those levels for an organization or program. It bridges the gap between the high-level test policy and detailed test plans. A test policy is broader and more principle-based, test approach is more specific, and test control is an ongoing management activity.