Why Entrust Your Web Application Maintenance to Us

Third-Party Application Maintenance (TAM) Explained

Web applications are dynamic. They evolve, age and can malfunction. That is why it is essential to maintain them.

Application maintenance is sometimes considered optional in a project. After investing time and money in building a tool, it is tempting to think everything is finally done once it is deployed to production. However, leaving an application without updates or fixes generates significant technical debt. Even if your needs stay constant, technologies and usage evolve, and your application ages.

A web application is a living organism: its dependencies receive security patches, browsers change their behavior, user expectations move forward. Ignoring these changes means accepting a growing risk of outages, security vulnerabilities or a degraded user experience.

What Exactly Is Technical Debt?

Technical debt represents the future development burden caused by neglected software design. Such a design is generally characterized by disregard for programming standards and the use of outdated technologies.

Although new projects are generally up to date with the latest standards, they accumulate technical debt over time, even if they remain functional as they are. To understand the mechanisms that amplify this phenomenon, the article on technical debt and its real impacts (in French) offers a useful analytical framework for technical teams and decision-makers.

In concrete terms, technical debt shows up in several ways. Third-party libraries that no longer receive security updates expose your application to known vulnerabilities. PHP versions or frameworks like Symfony that reach their official end of life deprive you of critical fixes. Development practices that were acceptable a few years ago become obstacles when you need to evolve the application or bring new developers onto the team.

What Are the Consequences of an Unmaintained Application?

The consequences become obvious within the first months, and worsen with time:

• Code complexity grows to work around problems caused by outdated versions
• Technical limitations can prevent common web behaviors from being implemented because of outdated software versions
• Developers struggle to work on the project because of old code that no longer follows current standards
• Security vulnerabilities accumulate, exposing your users' data and your company's reputation
• Performance degrades progressively, increasing load times and bounce rate
• A complete overhaul becomes far heavier than regular maintenance

In the end, developer enjoyment declines, every change becomes laborious, and the savings made by skipping evolutionary maintenance feed technical debt that grows exponentially over time. What could have been solved in a few hours of regular maintenance ends up requiring weeks of redesign.

The Three Types of Application Maintenance

TAM actually covers three main families of work, each meeting a distinct need.

Corrective Maintenance

Corrective maintenance consists of identifying and fixing defects found in production. It might be a form that no longer submits data correctly, a wrong calculation in a dashboard, a page that returns a 500 error under certain conditions, or an email that fails silently. These fixes are often urgent because they directly affect users and the smooth running of your business.

Evolutionary Maintenance

Evolutionary maintenance covers adding new features and adapting the application to new business needs. This can include integrating a new payment method, building a statistics dashboard, adding a data export module or adapting the interface to new user journeys. This maintenance keeps your application aligned with your company's strategy.

Preventive Maintenance

Preventive maintenance aims to anticipate problems before they occur. It includes security updates of dependencies, framework and language version upgrades, performance optimization, review of application logs and setting up automated tests. It is the most effective maintenance in the long run because it avoids heavy emergency interventions and keeps the application healthy.

Defining Third-Party Application Maintenance (TAM)

Application maintenance, or TAM, supports the lifecycle of a project, from fixing small bugs to building new features or upgrading components to keep up with technological change. Our Symfony application maintenance (in French) offering formalizes this support with concrete commitments tailored to each project.

This approach aims to reduce technical debt and extend the life of a web project, and is often specified contractually by a minimum number of days per month dedicated to the project.

Concrete Examples of Maintenance Tasks

To better understand what TAM covers day to day, here are examples of tasks we regularly perform for our clients:

• Upgrading Symfony to a new LTS version to benefit from four years of support and security patches, using tools like Rector to automate PHP and Symfony version upgrades (in French)
• Upgrading PHP to benefit from performance improvements and new language features
• Fixing a regression introduced by a browser update that changes the behavior of a JavaScript API
• Optimizing slow SQL queries identified through production response time analysis
• Setting up or strengthening the automated test suite to secure future changes
• Refactoring critical modules whose complexity slows down development
• Adapting the interface to new accessibility requirements (RGAA standards (in French), WCAG)
• Complying with regulatory changes such as the GDPR

Monitoring and Service Level Agreements (SLAs)

A good maintenance contract is not limited to stepping in when a problem is reported. At Efficience IT, we set up proactive monitoring of your applications to detect anomalies before they affect your users.

This includes tracking response times, detecting application errors with tools like Symfony Insight (in French), monitoring service availability and regularly analyzing activity logs. This constant watch lets us step in quickly and often solve a problem before you even notice it.

Our TAM contracts include service level agreements (SLAs) matched to the criticality of your application. These commitments define response and resolution times according to incident severity: a blocking production issue is handled first, while a change request follows an agreed schedule. This transparency lets you manage your resources and priorities with peace of mind.

The Benefits of a Dedicated Team

Entrusting your application's maintenance to a dedicated team rather than to occasional contributors offers significant advantages. A team that knows your project, your business and your technical history works faster and more effectively. It does not need to rediscover the code on every intervention, which shortens diagnosis time and limits the risk of regressions.

At Efficience IT, the developers who handle your TAM are the same ones who built your application or know it intimately. This continuity guarantees a detailed understanding of technical choices, business constraints and priorities. It also makes it possible to suggest relevant improvements, because the team spots optimization opportunities as it works.

In addition, a dedicated team ensures natural knowledge transfer among its members, avoiding dependence on a single person. If one developer is unavailable, a colleague familiar with the project can take over without delay.

How Much Time Should You Devote to Maintaining a Project?

The number of days devoted to maintenance varies with the project, its scale, its usage and its needs. It must be assessed case by case. In general, investing regularly but modestly in a project can be more beneficial than abandoning it for long periods, since it keeps knowledge of the tool fresh, allows gradual upgrades and lets you react quickly to user feedback.

Consider that at least one day of development per month is needed to maintain minimal effectiveness. For critical or high-traffic applications, two to four days per month cover corrective and preventive maintenance as well as some evolutionary work. This regular rhythm is far more efficient than a massive intervention every two or three years to catch up on accumulated delay.

What If I Have Nothing to Do on My Project?

When there are no identified bugs or necessary updates, TAM time can go toward:

• Cleaning up dead code (in French) and obsolete code
• Documenting the application
• Adding unit or functional tests
• Reviewing logs to detect hidden bugs that could be fixed
• Auditing performance and optimizing bottlenecks
• Preparing future version upgrades by identifying deprecations
• Improving the developer experience to make future work easier

These background tasks, often postponed for lack of time, are the ones that extend the life of your application most durably.

Conclusion

To ensure the longevity of your web application, regular maintenance, even minimal, is essential. TAM is not an unnecessary expense: it is an investment that protects the value of your digital tool, secures your data and your users' data, and keeps you competitive as the market evolves. We are convinced of its importance and ready to answer any questions you have on the subject.

Going Further

• Web audit at Efficience IT: method, criteria and content (in French), how we assess the health of your applications
• Why choose Symfony for your projects (in French), the framework we use for maintainable, high-performing applications
• Migration guide for a Symfony project (in French), planning the Symfony version upgrades included in your maintenance contract
• CVE: understanding security vulnerabilities and protecting web applications (in French), managing dependency vulnerabilities as part of preventive maintenance
• Symfony: the PHP framework for web projects, official documentation of the framework at the heart of our development
• Symfony Releases, Symfony release calendar to plan your updates