ISO/IEC 33063: Process Assessment Model for Software Testing

The aim of ISO/IEC 33063 is to define a Process Assessment Model for software testing for use in performing a conformant assessment in accordance with the requirements of ISO/IEC 33002 (Process assessment - Requirements for performing process assessments) for performing process assessments. An integral part of conducting an assessment is to use a Process Assessment Model (PAM) related to a Process Reference Model (PRM) and conformant with the requirements defined in ISO/IEC 33004 (Process assessment - Requirements for process models). A Process Reference Model cannot be used alone as the basis for conducting a consistent and reliable assessment of process capability since the level of detail is not sufficient. Therefore:

  • the description of the process purpose and process outcome(s) provided by the Process Reference Model need to be supported with a comprehensive set of indicators of process performance; and
  • the capability levels and process attributes defined in ISO/IEC 33020 (Process assessment - Measurement framework for assessment of process capability and organizational maturity) and its associated rating scale need to be supported with a set of indicators of process capability.

Used in this way and in conjunction with a documented process, consistent and repeatable ratings of process capability will be possible. ISO/IEC 33063 contains a set of indicators to be considered when interpreting the intent of the Process Reference Model. These indicators may also be used when implementing a process improvement program or to help evaluate and select an assessment model, methodology and/or tools. The Process Reference Model defined in ISO/IEC/IEEE 29119-2 forms the basis for the ISO/IEC 33063 exemplar process assessment model for software testing.