Legacy systems

Technical debt – when old code starts to cost you

Technical debt is anything in a system that makes future changes unnecessarily difficult, slow or risky. It doesn't all need to be paid off. But you need to know when it starts affecting the business.

An unsteady tower of wooden blocks

Not all old code is technical debt

Code can be old and still be stable, understandable and inexpensive to maintain. Problems arise when the structure means small changes require a lot of work or when no one dares to touch certain parts anymore.

How technical debt shows up in everyday work

Changes take longer than expected, errors appear in unexpected places, tests are missing, upgrades are postponed and only a few people understand the system. That's often when the business starts to feel the impact of technical debt.

What does it cost to leave it as it is?

The cost goes beyond development time. Technical debt can mean longer lead times, more operational problems and greater reliance on specific people. It can also lead the business to put off changes it really needs.

Pay down debt where it makes a difference

Don't try to clean up the entire system just to make the code look better. Prioritize parts that block important changes, cause recurring errors or pose a clear risk.

Start by understanding where technical debt is causing problems

Reviewing the system and the business’s needs gives you a better basis for decisions than simply aiming to modernise everything.

Contact us

Do you need help moving forward?

Tell us what you want to improve, and we’ll arrange a first call to discuss your system and the next steps.