# Maintenance > Ongoing technical maintenance: updates, security, bug fixes and enhancements. Keep your sites and apps performing long-term. Page: https://eldev.fr/en/services/maintenance/ · Version française: https://eldev.fr/services/maintenance/index.md · [Home](https://eldev.fr/en/index.md) We provide technical maintenance for your websites and applications to keep them performant, secure and up-to-date over time. Regular framework and dependency updates, fast bug fixes, proactive security monitoring and feature enhancements based on your needs. Our maintenance service frees you from technical concerns so you can focus on your business. Whether your project is a [WordPress site](https://eldev.fr/en/services/wordpress-cms/index.md) or a complex application, it stays reliable and competitive on a [healthy infrastructure](https://eldev.fr/en/services/hosting-infra/index.md). ## Capabilities ### Updates Regular updates of frameworks, plugins and dependencies to ensure compatibility and security. We test every update in a staging environment before applying it to production. ### Bug fixes Fast resolution of reported bugs and technical issues. Thorough diagnosis, targeted fix and regression testing to ensure the correction doesn't introduce new problems. ### Security Continuous security monitoring, critical patches applied within 24 hours and regular vulnerability audits. We protect your site against known vulnerabilities and emerging threats. ### Enhancements Feature additions and continuous improvements based on your needs and user feedback. Your site evolves with your business, without starting from scratch or switching providers. ## Who is this service for? Your project is live, but nobody is watching it, no alerts, no monitoring, no safety net. Maintenance is what keeps a small problem from becoming a real one. If the site is already down, our [website repair](https://eldev.fr/en/services/website-repair/index.md) service handles the emergency first. - No in-house developer, as in most SMEs and [nonprofits](https://eldev.fr/en/sectors/nonprofits/index.md): nobody on your team to handle updates, apply patches or respond when something breaks in production - Orphaned codebase: your previous agency is gone and the project runs untouched, you need someone to take it over and secure what's already there - Business-critical project: [e-commerce](https://eldev.fr/en/services/e-commerce/index.md), SaaS or internal app where any downtime costs money, you need uptime monitoring, fast response and a reachable point of contact - [WordPress site](https://eldev.fr/en/technologies/wordpress/index.md) with plugins to maintain: regular updates, compatibility checks and vulnerability tracking without breaking the site on every upgrade ## How it works. We perform a technical assessment of your site or application. A maintenance plan is defined with priorities, intervention frequency and tracking metrics. Every intervention is documented and you receive regular reports. ## What makes the difference. Proactive maintenance, not just reactive. We anticipate issues before they impact your users and keep you informed about the health of your tools. ## Frequently asked questions. ### How does billing work, blocks of hours, per incident, or monthly retainer? Three options depending on your situation. A monthly retainer suits standard maintenance needs: updates, minor fixes, monitoring. A premium contract adds continuous uptime monitoring, on-call availability and a guaranteed response time under 4 hours, suited for critical projects. Outside a retainer, one-off interventions are billed by the hour depending on complexity. If you're handing over an existing project, plan for 3 to 5 days of onboarding (code review, technical audit, documentation) before the retainer starts. Every quote is tailored, [see our hosting offer](https://eldev.fr/en/services/hosting-infra/index.md) if infrastructure is also part of the equation, or [get in touch](https://eldev.fr/en/contact/index.md) for a quick estimate. ### What's your response time when something goes wrong? Response time depends on your contract and the severity of the incident. Premium clients get a guaranteed response under 4 hours on business days, with urgent handling available on weekends for blocking incidents. Standard retainer clients: critical incidents (site down, active security breach) are handled within 24 hours; non-urgent fixes within 48–72 hours. For one-off interventions without a contract, lead time varies with our workload, typically 2 to 5 business days, unless the site is down, in which case our [emergency repair](https://eldev.fr/en/services/website-repair/index.md) service takes over. We always send an acknowledgement and a resolution estimate as soon as we receive your report. ### Can you take over a project built on a stack you're not familiar with? Yes, taking over unfamiliar projects is a regular part of what we do. We start with a structured onboarding: code review, dependency mapping, security and technical-debt assessment. This phase typically takes 3–5 days and is billed before the retainer begins. If the stack is unusual (legacy Symfony, old Rails, proprietary tech), we assess it honestly, if the complexity is outside our scope, we say so before committing. For standard stacks, WordPress, Laravel, Node, React and other common [web application](https://eldev.fr/en/services/web-development/index.md) setups, handover is straightforward. ### What does maintenance cover exactly? Maintenance covers four areas. Regular updates to dependencies, frameworks and plugins, tested in staging before going to production. Bug fixes for reported issues, with diagnosis, targeted patch and regression testing. Security monitoring with critical patches applied within 24 hours and periodic vulnerability audits. And small functional improvements included in the retainer, adding a field, tweaking a behaviour, adjusting a business rule, without commissioning a new project. What's not included in the standard retainer: major new features, module rewrites or significant development work, which are quoted separately. ### Do you run security audits? Yes. A standalone security audit is available independently of a maintenance contract. It covers known vulnerability analysis (exposed dependencies, server configuration, common OWASP issues), testing of critical entry points, and a prioritised report with concrete recommendations. Scope is quoted based on your application's complexity. Maintenance contract clients receive lightweight security checks built into their regular monitoring cycle. If your project runs on [infrastructure we manage](https://eldev.fr/en/services/hosting-infra/index.md), the audit also covers server configuration, firewall rules and SSH access. ## Other services - [Web Development](https://eldev.fr/en/services/web-development/index.md): Custom sites & apps - [E-commerce](https://eldev.fr/en/services/e-commerce/index.md): Stores that convert - [Mobile Apps](https://eldev.fr/en/services/mobile-apps/index.md): iOS & Android - [Artificial Intelligence](https://eldev.fr/en/services/artificial-intelligence/index.md): Automation & chatbots - [UI/UX Design](https://eldev.fr/en/services/ui-ux-design/index.md): Memorable interfaces - [WordPress & CMS](https://eldev.fr/en/services/wordpress-cms/index.md): Content management - [Desktop Apps](https://eldev.fr/en/services/desktop-apps/index.md): Cross-platform desktop - [Hosting & Infra](https://eldev.fr/en/services/hosting-infra/index.md): Servers & deployment - [ERP & Consulting](https://eldev.fr/en/services/erp-consulting/index.md): Integrated management & audit - [Website Repair](https://eldev.fr/en/services/website-repair/index.md): Emergency, picked up within 2 hours ## Contact [Contact form](https://eldev.fr/en/contact/index.md) (HTML page: https://eldev.fr/en/contact/) · Email: contact@eldev.fr · First chat is free. Response within 12 hours on business days.