This International Standard describes in greater detail management of the Maintenance Process described in ISO/IEC 12207. This International Standard also establishes definitions for the various types of maintenance. This International Standard provides guidance that applies to planning, execution and control, review and evaluation, and closure of the maintenance process. The scope includes maintenance for multiple software products with the same maintenance resources. "Maintenance" in this International Standard means software maintenance unless otherwise stated. This International Standard provides the framework within which generic and specific software maintenance plans may be executed, evaluated, and tailored to the scope and magnitude of given software products. This International Standard provides the framework, precise terminology, and processes to allow the consistent application of technology (tools, techniques, and methods) to software maintenance. This International Standard provides guidance for the maintenance of software. The basis for the Maintenance Process and its activities comes from the definitions of ISO/IEC 12207. It defines the activities and tasks of software maintenance, and provides maintenance planning requirements. It does not address the operation of software and the operational functions, e.g., backup, recovery, system administration, which are normally performed by those who operate the software. This International Standard is written primarily for maintainers of software and additionally for those responsible for development and quality assurance. It may also be used by acquirers and users of systems containing software who may provide inputs to the maintenance plan.