1. An old computing system, application, or software that remains in use despite being outdated or superseded by newer technology, often because it is critical to business operations or would be costly to replace
The bank is still running on a legacy system from the 1980s.
O banco ainda funciona com um sistema legado dos anos 1980.
2. Outdated or obsolete technology infrastructure that continues to support essential business functions
Migrating away from legacy systems requires significant investment and planning.
Migrar de sistemas legados requer investimento e planejamento significativos.