Corrective to Perfective Maintenance · L2 and L3 Engineers · Defined Response Times · Your Accounts, Your Code
Application Maintenance and Support From One Accountable Team
Your application is live, but nobody is keeping it secure, updated and fixed. Codersarts provides application maintenance and support with one accountable team for code fixes, updates, monitoring, backups and incidents.
What Is Application Maintenance and Support?
Application maintenance and support (AMS) is the ongoing work that keeps a live software application secure, working and useful after launch. It covers fixing defects, applying security updates, adapting to changes in browsers, platforms and third-party APIs, small improvements, monitoring, backups and responding to incidents, usually delivered by one team under a monthly agreement with defined response times.
Codersarts provides application maintenance and support services for web applications, SaaS products, internal business tools, APIs and AI-powered apps, whether your team built them, an agency delivered them, or they were created with AI coding tools. One accountable team looks after the code, the servers and the incidents, so problems are not passed between a hosting company and a developer.
Application maintenance and support keeps your software secure, working and recoverable every month, with one team accountable for the code, the servers and every incident.
Application Maintenance and Support at a Glance
Question | Answer |
|---|---|
What it covers | Corrective, adaptive, preventive and small perfective maintenance, plus monitoring, backups and incident response |
Applications | Web apps, SaaS platforms, APIs, internal tools, AI-powered apps and background services |
Common stacks | Node.js, Python, PHP, React, Next.js, Vue, Angular, PostgreSQL, MySQL, MongoDB, Supabase, Firebase |
Support levels | L1 triage, L2 diagnosis and configuration fixes, L3 code-level fixes by engineers |
Coverage | Business hours in your agreed timezone, with optional 24/7 critical cover |
Pricing | From $1,000 per month, after a one-time onboarding |
Ownership | Your code, data and cloud accounts stay in your company's name |
The Four Types of Software Maintenance
Maintenance is not only bug fixing. Software engineering standards such as ISO/IEC 14764 describe four types, and a complete maintenance agreement covers all of them.
Type | What it means | Examples |
|---|---|---|
Corrective | Fixing defects found in the live application | A checkout error, a broken report, a failing scheduled job |
Adaptive | Keeping the app working as its environment changes | A payment provider changes its API, a browser update breaks a layout, a runtime reaches end of life |
Preventive | Reducing the chance of future failures | Dependency and security updates, removing deprecated code, adding monitoring and tests |
Perfective | Small improvements to what already exists | Faster pages, clearer error messages, a new export field, small workflow changes |
Most budget overruns happen when only corrective work is planned. Adaptive and preventive work is predictable, so we schedule it every month instead of waiting for something to break.
Why Applications Need Ongoing Maintenance
An application can stop working even if nobody changes its code. The environment around it keeps moving:
Security vulnerabilities are published in open-source libraries every week, and attackers scan for unpatched versions automatically
Runtimes and frameworks reach end of life. Node.js, Python, PHP and major frameworks stop receiving security patches on published dates
Third-party services change. Payment, email, maps, authentication and AI providers update APIs and retire old versions, often with only a few months' notice
Data and traffic grow. Queries that were fast at launch slow down, and disks that were sized for launch fill up
Knowledge leaves. When the original developer moves on, nobody remembers how deployments or recovery work
Industry estimates commonly put annual maintenance at around 15 to 25 percent of the original build cost. The exact figure matters less than the principle: maintenance is a normal operating cost, like hosting, not an emergency expense.
What Our Application Maintenance and Support Services Include
Area | What we do every month |
|---|---|
Defect fixing | Reproduce, fix, test and deploy fixes for reported bugs |
Security maintenance | Apply security patches, update vulnerable dependencies and rotate exposed keys |
Version upgrades | Plan and test runtime, framework and library upgrades before support ends |
Integration upkeep | Keep payment, email, authentication, CMS and AI integrations working as providers change |
Monitoring | Watch availability, errors, response times, failed jobs, disk and memory |
Backups | Check backups daily and run a monthly restore test |
Incident response | Triage, communicate, restore service and write a short root-cause note |
Small enhancements | Minor changes within your included hours |
Documentation | Keep a runbook for deployments, configuration and recovery up to date |
Reporting | A monthly report on incidents, fixes, updates, hours used and risks |
New features and larger changes are quoted separately so your monthly fee stays predictable.
L1, L2 and L3 Application Support Explained
Enterprise buyers often ask for tiered support. Here is how the levels work and how we cover them.
Level | Who handles it | Typical work |
|---|---|---|
L1 | Your team or ours, depending on the agreement | Receive the request, confirm impact, gather screenshots and steps, answer known questions |
L2 | Codersarts support engineers | Diagnose logs, fix configuration, restart services, restore data, apply known workarounds |
L3 | Codersarts application engineers | Change code, fix root causes, upgrade components, deploy and verify |
Many small and mid-sized companies do not need a separate L1 desk. Your staff report issues by email or a shared channel, and our engineers take them from L2 and L3 straight away. Larger organisations can keep their own help desk for L1 and pass technical issues to us.
Signs Your Application Needs a Maintenance Partner
Updates keep getting postponed because nobody is sure what might break
Security alerts pile up in your code repository, and nobody has time to review them
The same bug returns after every quick fix, because the root cause was never found
Customers notice problems first, before anyone on your team receives an alert
Only one person knows how to deploy, and releases stop when they are away
You do not know when the last backup was tested, or whether it would restore at all
If two or more of these sound familiar, a structured maintenance agreement will usually cost less than the next serious outage.
Who Application Maintenance and Support Is For
Founders and product owners whose app is live and earning, but who do not have an in-house engineer to keep it healthy
Companies whose developer or agency has moved on. We start with a structured takeover of the existing app
Teams with apps built using AI coding tools that work today but need a professional team to keep them secure. See AI-Built App to Production
Engineering teams that want to focus on new features while a separate team maintains older products
Agencies that deliver apps to clients and need a maintenance partner. See White-Label App Maintenance
How We Start Supporting Your Application
Discovery call. We learn what the app does, who uses it, where it runs and what has gone wrong before.
Access in your name. You add us to your code repository, cloud account and services. Nothing is moved into our accounts.
Code and infrastructure review. We review the codebase, dependencies, configuration, deployment process and backups, and list the risks in plain language.
Stabilisation. We set up monitoring and alerts, confirm backups can be restored, and fix urgent issues you approve.
Runbook. We document how to deploy, roll back, restore and recover the application.
Monthly support begins. Requests, updates and incidents follow the agreed response times, with a monthly report.
If your application is not yet running on a properly managed server, onboarding happens through our Go-Live Package, which covers deployment, monitoring, tested backups and a findings report.
Response Times and Severity Levels
Support runs Monday to Friday in business hours agreed in your timezone. Critical incidents at night, at weekends and on holidays are covered when you add Critical Incident Cover.
Severity | Example | Acknowledgement | Recovery target |
|---|---|---|---|
Critical | App down, data at risk, security breach | 30 minutes (24/7 with cover) | 4 hours |
High | A major feature or scheduled job failing for many users | 2 business hours | 1 business day |
Normal | Minor defect, small change or question | 1 business day | Next scheduled update |
Recovery means the service works again, through a fix or a safe workaround. After every critical incident you receive a short root-cause note with steps to stop it happening again.
Application Maintenance Compared With Other Options
Option | Strengths | Limitations |
|---|---|---|
In-house developer | Deep product knowledge, full-time focus | Hiring takes months; one person is a single point of failure; holidays and sick days leave gaps |
Freelancer on call | Flexible and low cost for occasional fixes | No monitoring or response times; availability is not guaranteed |
Hosting company support | Keeps servers running | Does not fix application code or integrations |
Development agency | Good for new features | Maintenance is often slow or expensive between projects |
Codersarts AMS retainer | One team for code, servers and incidents, with defined response times and monthly reporting | A monthly commitment with a 3-month minimum |
How Application Maintenance Is Priced
Providers use four common pricing models for application support:
Hourly or time and materials: you pay for hours used. Simple, but there is no monitoring and no guaranteed response
Prepaid bucket of hours: a block of hours at a set rate, used as needed
Fixed monthly retainer: a set fee covering monitoring, maintenance, response times and an allowance of engineering hours
Percentage of build cost: an annual fee calculated from the original project price, common in fixed-price development contracts
We use a fixed monthly retainer with fair-use engineering hours, because maintenance work is continuous and response times only mean something when a team is already watching the application.
Application Maintenance and Support Pricing
Monthly Maintenance and Support
Starting at $1,000 per month, business hours
Corrective, adaptive, preventive and small perfective maintenance
Monitoring, daily backup checks and a monthly restore test
Severity-based response times and a named incident owner
Fair-use engineering hours, confirmed after code review
Monthly report on incidents, updates, hours and risks
Onboarding
Go-Live Package, starting at $2,000 one-time, if the app needs to be reviewed, deployed or moved onto a properly managed server first.
Add-ons
24/7 critical incident cover: $250 per month
Additional engineering in business hours: $50 per hour, with your approval
Out-of-hours critical work beyond included hours: $75 per hour
The monthly service is delivered as Managed Run. For the full picture of hosting, setup and ongoing support, see Managed App Operations.
What Is Not Included
New features, redesigns and large changes, which we quote separately
Third-party costs for hosting, AI providers, email services and software licences
Support for software we have not reviewed and onboarded
End-user help desk support for your customers, unless agreed separately
Your Code, Your Accounts, Your Data
Your repository, cloud accounts, domains and databases stay in your company's name. We work through delegated access that you can remove at any time. Credentials are stored in a password manager, never in chat or email, and every change is made through version control so you can see exactly what was done. If you ever move to another provider, the runbook and documentation go with you.
Frequently Asked Questions
What is application maintenance and support?
It is the ongoing work of keeping a live application secure, working and recoverable: fixing defects, applying updates, adapting to platform changes, monitoring, backups and incident response.
What are the four types of software maintenance?
Corrective maintenance fixes defects, adaptive maintenance keeps the app working as its environment changes, preventive maintenance reduces future failures, and perfective maintenance makes small improvements.
How much do application maintenance services cost?
Codersarts application maintenance and support starts at $1,000 per month, with fair-use engineering hours confirmed after a code review and extra hours at $50 per hour with your approval.
Can you support an application you did not build?
Yes. Most applications we support were built by another team, freelancer, agency or with AI coding tools. We start with a code and infrastructure review before taking responsibility.
What is the difference between L1, L2 and L3 support?
L1 receives and triages requests, L2 diagnoses issues and fixes configuration or data problems, and L3 changes code to fix root causes. Codersarts engineers handle L2 and L3.
Do you offer 24/7 application support?
Standard support runs in business hours in your timezone. 24/7 critical incident cover is available as an add-on for $250 per month.
Which technologies do you maintain?
We maintain applications built with Node.js, Python, PHP, React, Next.js, Vue, Angular and common databases such as PostgreSQL, MySQL, MongoDB, Supabase and Firebase.
Is there a minimum contract period?
Monthly support has a 3-month minimum, then continues month to month with 30 days' notice.
Keep Your Application Secure, Working and Supported
Tell us what your application does, where it runs and what worries you most. We will review it and recommend the right level of maintenance and support.