Glossary
Computer systems and software obsolescence

Legacy ; legacy

Legacy" refers to older systems (versus newer technologies). Note that the term Legacy is also used to designate software functionalities inherited over the course of different software versions.

Migration; migration

Action of moving data or software from one computer system to another.

Obsolescence; obsolescence

Transition from the state of availability to the state of unavailability of an entity from its manufacturer in accordance with the original specification (IEC 62402, (2019)).

Programmed obsolescence; planned obsolescence

Synonym for "calculated obsolescence": a set of techniques designed to reduce a product's lifespan or period of use, in order to encourage consumers to replace it more frequently.

Patch; patch

1. modification made directly to an object program...