Your CMMS is software, and software needs maintaining too. Patches, updates and testing are what keep the system you rely on from quietly becoming the thing that fails.
This is about maintaining the software itself — the four types of software maintenance, the practices that keep it healthy, and what to ask your vendor about theirs.
Maintenance teams spend their time keeping equipment running. The software that tracks that equipment needs the same discipline applied to it — and when it does not get it, the system slowly stops being trustworthy.
Strategic software maintenance is the difference between a system that stays useful for a decade and one that is quietly worked around within two years. This page covers why it matters, the four recognised types, and the practices that keep software healthy — whether you are maintaining an in-house system or evaluating a vendor who maintains one for you.
Why Software Maintenance Matters
Maintenance is where most of a software system’s lifetime cost actually sits. Industry estimates commonly put the majority of total cost of ownership after launch rather than before it, and the largest share of that post-launch work goes into improvement rather than bug fixing.
The same principle applies to physical assets, and there the figures are firmer: investing in preventive maintenance saves 12 to 18% against running to failure.
The market for maintenance management software continues to grow. Grand View Research valued the global CMMS market at USD 1.3 billion in 2024, forecasting growth at a CAGR of 11.1% between 2025 and 2030.
The Four Types Of Software Maintenance
Software maintenance is usually divided into four categories. They are not interchangeable, and a vendor doing only the first is not maintaining the product.
- Corrective maintenance: fixing errors or defects in response to user reports. Reactive by definition — something broke and it is being repaired.
- Adaptive maintenance: modifying software so it keeps working as the environment around it changes — new operating systems, new browsers, new devices, new regulations.
- Perfective maintenance: enhancing performance or functionality. This is where most post-launch effort goes, and it is what separates a product that improves from one that merely survives.
- Preventive maintenance: work done to stop future problems — refactoring, removing technical debt, hardening security before anything has gone wrong.
The parallel with equipment maintenance is exact. Corrective is run-to-failure. Preventive is the PM schedule. A team that only does corrective work on its software is doing reactive maintenance and paying the same premium for it.
What This Means When You Are Choosing A CMMS
If a vendor hosts your CMMS, their software maintenance practice is your uptime. The questions worth asking:
- How often do you release? A regular cadence means adaptive and perfective work is actually happening. Long gaps usually mean corrective only.
- How are security patches handled? Automatically, at predetermined intervals, with no action needed from you — or on request.
- What is on the roadmap? A vendor who cannot describe the next two releases is not doing perfective maintenance.
- What happens to our data during an upgrade? Cloud multi-tenant systems upgrade everyone at once. Make sure you know what that means for your configuration.
The answers tell you more about the next five years of your system than any feature list will.
Best Practices For Software Maintenance
- Maintain proper documentation. Comprehensive documentation helps developers understand software architecture, design, and functionality, which makes problems faster to identify and resolve.
- Perform regular backups. Essential for data preservation in case of system failures or unforeseen issues — and worth testing the restore, not just the backup.
- Test regularly. Identifying and resolving problems before they escalate is cheaper than fixing them in production, for exactly the same reason preventive maintenance beats reactive on the plant floor.
- Stay up to date with current technology. Ensures software remains compatible with new hardware and software platforms rather than becoming stranded on an old stack.
Frequently Asked Questions
What is the difference between software maintenance and maintenance software?
Software maintenance is the work of keeping a software system healthy — fixing defects, adapting to new environments, improving performance, preventing future problems. Maintenance software is a product category, such as a CMMS, used to manage the maintenance of physical assets. This page is about the first. Confusing the two is common, because the words are identical in the other order.
What is strategic software maintenance, and how does it differ from routine maintenance?
Strategic software maintenance goes beyond routine tasks. It is a planned approach that aims at longevity and efficiency rather than only repairing what has broken, and it includes preventive and perfective work that no user has asked for yet.
What is a CMMS, and how does it relate to software maintenance?
A CMMS, or Computerized Maintenance Management System, is software designed to manage the maintenance of physical assets. It relates to software maintenance in two ways: it is itself a piece of software that needs maintaining, and the discipline it applies to equipment — planned work, recorded history, preventive schedules — is the same discipline good software maintenance applies to code.
Why does software maintenance extend an application’s useful life?
Because the environment around software keeps changing even when the software does not. Operating systems update, browsers change, security standards move, regulations shift. Adaptive maintenance is what keeps an application usable through all of that; without it, working software becomes unusable software without anyone touching the code.
Which type of software maintenance costs the most?
Perfective maintenance — improvements and enhancements — typically consumes the largest share of post-launch effort, ahead of corrective bug fixing. That surprises people who assume maintenance means repair, but most of the work in a healthy system is making it better rather than putting it back.
What should you ask a CMMS vendor about their software maintenance?
Release frequency, how security patches are applied, what is on the roadmap for the next two releases, and what happens to your configuration during an upgrade. A vendor doing only corrective maintenance will struggle to answer the roadmap question.
Conclusion
Maintaining software is the same argument as maintaining equipment, applied to a different asset. Left alone, both degrade quietly and then fail at the worst moment. Maintained deliberately, both last longer and cost less over their life.
If you run a CMMS, it is worth applying to your software the standard you already apply to your plant — and worth asking whoever supplies it to do the same.
Ask Us The Roadmap Question
Release cadence, patching, upgrades, what happens to your configuration. Bring the list — we will answer all four.
