Methodology for establishing quality requirements and identifying, implementing, analyzing, and validating software quality metrics. To clarify the use of terminology in the document; incorporate lessons learned since publication from workshops, teaching classes based on the document, and field experience of users, and clarify relationships with related international standards. Revision Standard - Inactive-Reserved. This IEEE Standards product is part of the family on Software Engineering. A methodology for establishing quality requirements and identifying, implementing, analyzing, and validating the process and product software quality metrics is defined. The methodology spans the entire software life cycle.