Strategy

Legacy System

Definition

A legacy is an outdated system that is still in use, often due to its critical role.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.

The reality

Legacy create and technical debt.

Plain English

Old still being used.

FAQ

Common questions

A few practical answers to the questions that usually come up around this term.

What is a legacy system?

An older 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.

Related Services

Related Terms

SystemArchitecture

Technical Constraint

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Previous feedback

Will Parkhouse

Senior Content Designer

01/20