What is IT modernization? Definition and explanations
IT modernization means evolving an application estate and infrastructure that have become costly, risky or blocking: legacy systems, unsupported technologies, fragile dependencies. It rarely proceeds by wholesale replacement; more often in stages — isolate, wrap behind APIs, migrate domain by domain. The trigger is operational risk as much as functional need.
In one sentence
IT modernization evolves an estate that has become costly, risky or blocking, in stages rather than at once.