Software Maintenance Plans: What Yours Should Include

Launching software is the start of its life, not the end. Libraries go out of date, security issues are discovered, browsers and phones change, and your business keeps asking for small improvements. Without a maintenance plan, software slowly becomes fragile, insecure and expensive to fix.

Here is what a good software maintenance and support plan should cover, and how to budget for it.

The four kinds of maintenance

1. Corrective: fixing bugs found in production.
2. Adaptive: keeping up with changes around the software, such as new OS versions, browser updates, API changes from third parties and app store policy changes.
3. Preventive: updating dependencies, cleaning up code and fixing small issues before they cause outages.
4. Perfective: small improvements to usability and performance based on how people use the system.

What your plan should include

Security updates

Regular updates to frameworks, libraries and servers, with critical security patches applied quickly. This is the most important part of any plan.

Monitoring and alerts

Uptime checks, error tracking and performance monitoring, so problems are spotted before customers report them.

Backups and recovery

Automated backups, stored separately from the main system, and a tested restore process. A backup you have never restored is a guess.

Bug fixes with clear priorities

Severity levels with response targets, for example:

Hosting and infrastructure care

Server and database updates, SSL renewals, cost reviews and scaling as usage grows. See our cloud deployment checklist.

Small improvements

A monthly allowance of hours for minor changes, so small requests do not each need a new quote.

Reporting

A simple monthly report: uptime, incidents, updates applied and hours used.

How to budget for maintenance

A common planning figure is 15–25% of the original build cost per year. Simple, stable systems sit at the lower end. Systems with many integrations, heavy usage or strict uptime needs sit higher. Plans are usually billed as a monthly retainer with a fixed number of hours, plus agreed rates for extra work. Our software budget guide covers how to plan for this from the start.

Warning signs your software needs a maintenance plan

• Nobody has updated its libraries or server in over a year.
• You are not sure when the last backup was, or whether it works.
• Only one developer understands how it works.
• Customers find bugs before your team does.
• You do not hold the source code or hosting accounts. Read why owning your source code matters.

Nexory Technologies maintains and supports web apps, mobile apps and business systems, including ones we did not build. We start with an audit, then agree a plan with clear response times. See our software maintenance and support services.