Life Cycle Process (glossary)
(1) A process is a set of interrelated or interacting activities which transforms inputs into outputs (ISO/IEC 2008).
(2) Life cycle: evolution of a system, product, service, project or other human-made entity from conception through retirement. (ISO/IEC 2008)
(1) and (2) ISO/IEC. 2008. Systems and Software Engineering -- System Life Cycle Processes. Geneva, Switzerland: International Organisation for Standardisation / International Electrotechnical Commissions. ISO/IEC/IEEE 15288:2008
A life cycle process is a process that is applied during the application of the life cycle model. ISO 15288 (2008) lists and describes 25 life cycle processes for systems and software engineering. These are aggregated into four groups: agreement processes, technical processes, organizational project-enabling processes, and project processes.