Strategy
Legacy System
Plain English
Old glossarySystemA system is a collection of interconnected components that work together to achieve a specific function or outcome.Open glossary term still being used.
Definition
A legacy glossarySystemA system is a collection of interconnected components that work together to achieve a specific function or outcome.Open glossary term is an outdated system that is still in use, often due to its critical role.
In practice
Often maintained because replacing it is complex or risky.
In context
It is rarely kept out of nostalgia. It is kept because it works, nobody fully knows what it does, and the cost of finding out is the real project.
The reality
Legacy glossarySystemA system is a collection of interconnected components that work together to achieve a specific function or outcome.Open glossary term create glossaryConstraintsConstraints are limitations or restrictions that impact how a product or solution can be designed or built.Open glossary term and technical debt.
Compared with
Legacy System vs Technical Debt
Technical debt is a compromise taken knowingly to move faster, with an intention to repay. A legacy glossarySystemA system is a collection of interconnected components that work together to achieve a specific function or outcome.Open glossary term is one that has outlived its glossaryArchitectureArchitecture refers to the structure and organisation of a system, including how components interact and are designed.Open glossary term and its expertise. Debt is a decision; legacy is an accumulation.
FAQ
Common questions
A few practical answers to the questions that usually come up around this term.
What is a legacy system?
An older glossarySystemA system is a collection of interconnected components that work together to achieve a specific function or outcome.Open glossary term still in use.
Why are they kept?
They are critical or hard to replace.
What is a risk?
Technical debt and limitations.
How are they managed?
Through gradual updates or replacement.
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