Management review A systematic evaluation of software acquisition, supply, development, operation, or maintenance process, performed by or on behalf of management that monitors progress, determines the status of plans and schedules, confirms requirements and their system allocation, or evaluates the effectiveness of management approaches to achieve fitness for purpose IEEE 610, IEEE 1028]. Maturity: (1) The capability of an organization with respect to the effectiveness and efficiency of its processes and work practices. See also Capability Maturity Model (2) The capability of the software product to avoid failure as a result of defects in the software. ISO 9126] See also reliability. Maturity levelDegree of process improvement across a predefined set of process areas in which all goals in the set are attained [TMMi]. Maturity model A structured collection of elements that describe certain aspects of maturity in an organization, and aid in the definition and understanding of an organization's processes. A maturity model often provides a common language, shared vision and framework for prioritizing improvement actions. Measure:The number or category assigned to an attribute of an entity by making a measurement ISO 14598]. Measurement: The process of assigning a number or category to an entity to describe an attribute of that entity ISO 14598].