A management process for establishing and maintaining consistency of a product's performance, functional, and physical attributes with its requirements, design and operational information throughout its life.
Sources:
CNSSI 4009-2022 from DAU Glossary

  A collection of activities focused on establishing and maintaining the integrity of information technology products and information systems, through control of processes for initializing, changing, and monitoring the configurations of those products and systems throughout the system development life cycle.
Sources:
NIST SP 1800-16B under Configuration Management
NIST SP 1800-16C under Configuration Management
NIST SP 1800-16D under Configuration Management

  A collection of activities focused on establishing and maintaining the integrity of information technology products and systems, through control of processes for initializing, changing, and monitoring the configurations of those products and systems throughout the system development life cycle.
Sources:
NIST SP 800-37 Rev. 2 from NIST SP 800-128
NIST SP 800-53 Rev. 5 from NIST SP 800-128

  A collection of activities focused on establishing and maintaining the integrity of products and systems, through control of the processes for initializing, changing, and monitoring the configurations of those products and systems throughout the system development life cycle.
Sources:
NIST SP 800-128 under Configuration Management
NIST SP 800-128

  A collection of activities focused on establishing and maintaining the integrity of information technology products and systems through the control of processes for initializing, changing, and monitoring the configurations of those products and systems throughout the system development life cycle.
Sources:
NIST SP 800-171r3
NIST SP 800-172r3