Early in the life cycle product quality is measured against set criteria by means of peer reviews.
This Specific Goal is looking to the organisation to demonstrate that the peer reviews process is measured for its efficiency and effectiveness. Because of this there is more formality and reporting expected than for the Level 3 Process Area Peer Reviews.
SP 2.1 Define peer review measurement guidelines
SP 2.2 Define peer review criteria based on product quality goals
SP 2.3 Measure work product quality using peer reviews