Glossary topic: 

The process of moving digital records or data from one system, storage medium, hardware or software configuration to another, or from one generation of computer technology to a subsequent generation, while maintaining the authenticity, integrity, reliability and usability of the records.

Migration can be a form of digital preservation to ensure continued access to the digital records and information as the system or storage medium becomes obsolete, unsupported or degrades.

Source: Adapted from ISO 15489–1:2016–Information and documentation: Records management, definition 3.13, and Society of American Archivists: A Glossary of Archival and Records Terminology.

See also Version migration, Format migration, System migration, Digital source records, Conversion