Which of the following is NOT a defined phase of formal review?

The phase of "Product commercialization" is not considered a defined phase of a formal review. Formal reviews typically focus on evaluating and assessing the quality and completeness of work products before they proceed to the next stage in the development process.

The standard phases of a formal review often include activities like kick-off meetings, where the review process is initiated and participants understand their roles; rework, which is the phase where issues identified during the review are addressed; and follow-up, where the team checks that the necessary changes have been made and ensures that the work is meeting the defined standards. "Product commercialization," however, pertains to launching and marketing a complete product rather than evaluating or reviewing it during the development lifecycle. Hence, it does not fit into the structured phases of formal reviews aimed at ensuring quality assurance and development integrity.