Programming - Language
COBOL
A legacy programming language designed for business data processing
What's it for?
Keeps long-running business systems working where replacing the old software would be difficult and expensive.
For example…
A bank uses COBOL to calculate overnight interest on accounts.
A government benefits system still runs a nightly COBOL program that calculates payments from millions of long-standing records
Think of it like…
The original vault under a refurbished bank branch: customers see glass and apps; the money still sits on the old rails