Legacy System: Definition, Types and More | OpenLegacy
A legacy system is a piece of tech that's functional and in use, but not the most up-to-date alternative. Learn more, including why to modernize legacy systems


Today’s enterprises typically rely on a large and complex tech stack. There’s likely a wide range of software, hardware, and infrastructure that combines to keep your organization running day-to-day. What’s equally likely is that you don’t regularly update, upgrade, and modernize all of those systems. If that’s true, then you’re likely running what are known as legacy systems.