Application Maintenance Services
Your application stays secure, fast, and stable. We handle everything it takes.
Proactive monitoring, security patching, bug triage, and performance optimization, all under a fixed monthly retainer with a defined service level agreement. Your team ships features. We keep the application healthy.
Application health board • Live status
Healthy
Warning
Critical
Healthy
Storefront Pro
Next.js + Node
99.97%
30-day uptime
0 issues
open
2d ago
last patch
Healthy
Admin Portal
.NET + React
99.91%
30-day uptime
1 issue
open
5d ago
last patch
Warning
Analytics API
Python + FastAPI
99.72%
30-day uptime
2 issues
open
12d ago
last patch
Critical
Legacy Importer
Node.js v16
97.4%
30-day uptime
4 issues
open
34d ago
last patch
99.9%
Avg uptime
0
Patches this month
0 crit
Open issues
0
Resolved this month
2 hour
Critical response SLA
What Happens Without Maintenance
Three numbers that explain why maintenance is not optional.
Security exposure
0%
of applications have at least one known critical vulnerability
in their dependency tree
Dependency vulnerabilities accumulate silently. Most teams discover them only after a breach or a compliance audit. A maintenance plan includes automated dependency scanning and patching on a monthly cycle.
Downtime cost
$0
average cost per minute of unplanned application downtime for
mid-market businesses
A single 4-hour outage on a busy trading day can cost more than a year of maintenance coverage. Proactive infrastructure monitoring catches degradation before it becomes downtime.
Performance decay
0%
of applications show measurable performance degradation within 6
months without active optimization
Data growth, query drift, and cache invalidation compound over time. Page load times creep up 50 milliseconds per quarter. A maintenance plan includes monthly performance baseline reviews and optimization sprints.
What Maintenance Coverage Looks Like
Your application maintenance command center. Live service level agreement tracking, incident log, and patch history.
Current SLA status
99.97%
30-day uptime
SLA target: 99.9%
Average response time214ms
Target: 300ms
SLA burn rate12%
Monthly error budget used
Active ticket queue
7 open • 0 critical
Slow query on orders index
MNT-0441 • Opened 2 hours ago
High
Dependency update: next.js 14.2.3
MNT-0440 • Scheduled Tuesday
Patch
Image CDN cache miss rate elevated
MNT-0439 • In progress
Perf
Monthly security scan complete
MNT-0437 • Resolved 4 hours ago
Done
Node 18 LTS compatibility check
MNT-0436 • Resolved yesterday
Done
Last 30 days
Security patches applied
0
Bugs resolved
0
Performance optimizations
0
Average ticket close time
8.4 hours
Monthly report
Sent to stakeholders on the 1st. Includes SLA summary, patch
log, performance trends, and next 30-day maintenance plan.
What Your Maintenance Plan Covers
Five pillars of application health. All included in your monthly retainer.
Pillar 01
Proactive monitoring. We see problems before your users do.
Around-the-clock automated monitoring across uptime, error rates, response times, and database performance. Alert thresholds are set at degradation levels, not at failure levels. You get notified at twice the normal response time, not when the application is down.
- Uptime and availability monitoring
- Error rate and exception tracking
- Database query performance baseline
Pillar 02
Security patching. Monthly dependency audits and vulnerability resolution.
Every dependency in your application has a vulnerability window. We run automated CVE scans monthly and apply patches in scheduled maintenance windows with zero-downtime deployment. Critical vulnerabilities are addressed within 24 hours of disclosure.
- Monthly CVE scan and patch report
- Zero-downtime patch deployment
- 24-hour critical vulnerability response
Pillar 03
Bug triage and resolution. Service level agreement-backed response on every ticket category.
Every bug reported is triaged within 1 business day. Critical bugs affecting availability get a 2-hour initial response. High-priority bugs affecting core functionality get 4 hours. Standard bugs are resolved within the monthly maintenance window. All tracked and reported.
Critical
2 hour response
High
4 hour response
Standard
1 day triage
Patch
Monthly window
Maintenance in Action
12 months of application maintenance. Click each milestone to see what changed.
Month 0 • Onboarding
Technical audit and coverage begins
Initial codebase and dependency audit. 47 outdated packages
identified. Security baseline established.
Month 1 to 3 • Stabilization
Security patching sprint and performance baseline
47 packages patched. 12 critical vulnerabilities closed.
Average response time reduced 28%.
Month 4 to 6 • Optimization
Database optimization and cache improvements
3 slow queries optimized. CDN configuration updated. 40%
reduction in server load at peak.
Month 7 to 9 • Reliability
Incident prevented: dependency zero-day patched within 18
hours of disclosure
Critical Express.js vulnerability CVE-2024-XXXX patched
before exploitation window. No downtime.
Month 10 to 12 • Result
12-month summary: 99.97% uptime, 0 security incidents
89 patches applied. 34 bugs resolved. Performance improved
52% versus month 0 baseline.
Why Redefine Application Maintenance
Three reasons our maintenance clients don't call us for emergencies anymore.
01
Fixed SLA, not best effort
Response time is written into the contract. Not a target. Not a
goal.
Most maintenance vendors write "best effort" service level agreements that aren't enforceable.
Our service level agreement specifies exact response windows by priority tier, confirmed in the engagement agreement. If we miss a critical response SLA, the following month is credited.
02
We take over any application
Built by another team. Inherited from a previous agency. We
onboard it in 2 weeks.
The onboarding process includes a technical audit, dependency review, infrastructure assessment, and documentation of the system architecture.
Most applications are fully onboarded within 2 weeks, after which full maintenance coverage begins with no exclusions.
03
Monthly report, every month
A PDF report on the 1st. What was patched, what was fixed, what
was optimized, and what's planned.
Most maintenance relationships run invisibly until something breaks.
Every client receives a monthly maintenance report on the 1st: SLA summary, patch log, bug resolution list, performance trends, and the next 30-day plan. You always know what your maintenance retainer covered.
Common Questions
What CTOs and engineering leads ask before starting a maintenance plan.
Application maintenance includes security patching and dependency updates, performance monitoring and optimization, bug triage and resolution, infrastructure and uptime monitoring, scheduled compatibility updates, and monthly maintenance reports. The scope is agreed before the engagement starts with a defined service level agreement for response times and resolution windows.
Application maintenance is priced as a fixed monthly retainer based on the size and complexity of the application. The retainer covers a defined number of maintenance hours per month, all proactive monitoring, security patching, and a guaranteed service level agreement for bug response and resolution. You receive one invoice per month with no variable hourly billing. See the pricing page for retainer range by application size.
Critical bugs affecting availability or data integrity have a 2-hour initial response service level agreement and a 24-hour resolution target. High-priority bugs affecting core functionality have a 4-hour response and 48-hour resolution target. Standard bugs are triaged within 1 business day. All service level agreements are defined in the engagement agreement before work starts.
Yes. We take on applications built by other teams. The onboarding process includes a technical audit of the codebase, dependency review, infrastructure assessment, and documentation of the system architecture. Most applications are fully onboarded within 2 weeks, after which full maintenance coverage begins. See software audit services for the full onboarding audit process.
Reactive bug fixing means your team reports a problem and we fix it. Proactive maintenance means we identify and resolve issues before they affect your users. This includes automated monitoring alerts, dependency vulnerability scans, performance baseline tracking, and scheduled patching windows. Proactive maintenance clients experience significantly fewer user-reported issues within 90 days of starting a plan.
Get A Maintenance Plan
Tell us about your application. We'll scope a maintenance plan and SLA within 48 hours.
No commitment until you see the plan and the monthly rate. No pitch.
Form
Submit brief → technical audit within 48 hours → plan and SLA scoped in 3 days → coverage live within 1 week
48 hours
Audit response
3 days
Plan scoped
2 hours
Critical SLA
Fixed
Monthly rate
Brief received.
We will complete a technical audit and send a maintenance plan with service level agreement terms within 48 hours.
