1. An older version of software, hardware, or a system that is no longer actively developed or supported but continues to be used
The company still maintains the legacy version of their software for customers who haven't upgraded.
A empresa ainda mantém a versão legada do seu software para clientes que não atualizaram.
2. A previous generation technology or system that remains in operation despite being superseded by newer alternatives
We need to migrate data from the legacy version to the new platform.
Precisamos migrar dados da versão legada para a nova plataforma.