Software Maintenance and Support: What Happens After Launch

By P-Soft Expert Team September 13, 2026 5 min read

Many organisations assume that once their custom software goes live, the project is finished. In reality, launch is the beginning, not the end. From day one the software enters the real world: real users rely on it, real data flows through it, and business conditions keep changing. Without a structured maintenance plan, even the best-built software gradually becomes slower, less secure, and out of step with what the business actually needs.

Why software needs ongoing maintenance

No software runs in a vacuum. The operating systems, browsers, libraries, and cloud services your application depends on are updated constantly. New security vulnerabilities are discovered, regulations shift, and users develop fresh expectations. Maintenance means keeping the software aligned with all of this change so that your original investment keeps its value. Neglecting maintenance almost always costs more than the maintenance itself: a single breach or a prolonged outage can seriously damage revenue and reputation.

Types of maintenance

Corrective (bug fixes): Identifying and resolving errors and incorrect behaviour that only surface once real users interact with the system.
Security patching: Quickly closing newly discovered vulnerabilities and updating dependencies to protect user data.
Adaptive updates: Keeping the software compatible with external changes such as new operating system versions, browsers, payment gateways, or third-party services.
Perfective (new features): Adding new capabilities, improving the user experience, and optimising performance based on real feedback and business growth.
Monitoring and hosting: Continuously watching server health, running regular backups, managing hosting, and ensuring the service stays available.

Support models and SLAs

Support is usually delivered through a service level agreement (SLA) that makes expectations clear for both sides. A good SLA defines things like support hours, initial response time based on issue severity, target resolution time, and a service availability (uptime) target. Common support models include a monthly retainer with defined hours, on-demand support (pay per work), and tiered plans such as basic, professional, and enterprise with progressively faster response times. The right model depends on how business-critical the software is for your operations.

How to budget for maintenance

A common industry rule of thumb is to plan annual maintenance as a percentage of the original build cost. For many projects this falls in the rough range of 15 to 20 percent per year, though it can be lower or higher depending on complexity, security sensitivity, and how quickly you want to add new features. These figures are general planning ranges rather than price guarantees. It is wise to plan for maintenance from the design stage so the ongoing cost never comes as a surprise.

Our recommendation

At P-Soft (Barsavosh Fanavaran) we do not treat maintenance as separate from development. We build the software and then stay alongside you with a clear support plan so your investment stays healthy over time. If you want a solution designed from day one with long-term maintenance and support in mind, our custom software development service is built for exactly that. To discuss your needs, Request a consultation.

Frequently Asked Questions

Is software maintenance really necessary?

Yes. Without regular security updates and bug fixes, software becomes vulnerable to threats and steadily drifts out of compatibility with its technical environment. The cost of ignoring maintenance is usually far higher than the maintenance itself.

Roughly how much does annual maintenance cost?

As a general planning range, many projects budget around 15 to 20 percent of the build cost per year for maintenance. The exact figure depends on the complexity of the system and your specific needs.

What is the difference between bug fixes and adding new features?

Bug fixes (corrective maintenance) mean repairing something that should have worked but did not, while adding new features (perfective maintenance) means extending the software with fresh capabilities to match business growth.

Related services

P-Soft (Barsavosh Fanavaran) Expert Team

This article was written and reviewed by the enterprise-software specialists at Barsavosh Fanavaran (P-Soft) — makers of products such as Hamkhoneh, Avadar, Nooradio and Hamahang.

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