Most teams build their monitoring stack after the first painful outage.
That is backwards.
The best time to set up monitoring is before you need it — when you still have time to choose the right checks, route alerts properly, and make sure the next incident is detected in minutes instead of hours.
This website monitoring checklist gives you a practical setup you can use before an outage happens. It is designed to be skimmable, actionable, and useful whether you run a SaaS product, ecommerce site, agency portfolio, or internal business app.
Why a monitoring checklist matters
Monitoring often fails for one of two reasons:
- Teams only monitor the homepage and assume they are covered.
- Teams add too many noisy alerts and stop trusting the system.
A checklist helps you avoid both mistakes.
It forces you to ask:
- Are we monitoring the right things?
- Will the right person actually see the alert?
- Can we tell the difference between a real outage and a transient blip?
- Do we have a way to communicate with customers during an incident?
If the answer to any of those is no, this guide will help.
The website monitoring checklist
Use this as your baseline setup.
1. Monitor your homepage and primary app URL
Start with the obvious but essential checks:
- Homepage or marketing site
- Main application URL
- Login page or customer entry point
These checks answer the first question every team needs answered: is the site reachable right now?
Best practice:
- Use HTTP/HTTPS checks
- Alert on repeated failures, not a single failed request
- Track response time as well as uptime
If you want a deeper breakdown, see API Uptime Monitoring: Health Checks That Actually Catch Real Failures.
2. Add SSL certificate monitoring
SSL expiration is one of the most preventable outage types.
Your site can be technically online and still unusable if the certificate expires and browsers start showing warnings.
Checklist:
- Monitor every production domain and subdomain certificate
- Alert at multiple intervals before expiry
- Include certificate renewals in your ops calendar
- Verify auto-renewal actually worked
A good target is alerts at 30, 14, 7, and 1 day before expiry.
3. Monitor DNS resolution
DNS issues can make your site unreachable even when your servers are healthy.
Checklist:
- Monitor your primary domain
- Monitor critical subdomains like
app,api, andstatus - Verify records resolve to the expected target
- Review DNS after registrar or CDN changes
This is especially important if you use Cloudflare, multiple providers, or recent infrastructure migrations. Related reading: DNS Monitoring: The Overlooked Foundation of Website Reliability.
4. Monitor a real health endpoint
A homepage returning 200 does not always mean your product works.
Your app may be up while:
- the database is unavailable
- the queue is stuck
- authentication is failing
- a critical dependency is timing out
That is why you should expose and monitor a health endpoint such as /health or /api/status.
Checklist:
- Create a lightweight health endpoint
- Return 200 when healthy and 503 when degraded
- Include only critical dependencies
- Keep the endpoint fast and stable
5. Monitor authenticated or critical API flows
If your product depends on authenticated APIs, monitor them directly.
Checklist:
- Monitor at least one authenticated API endpoint
- Include required headers, tokens, or request bodies
- Validate expected status codes and response content
- Separate public uptime checks from authenticated product checks
This catches failures your homepage monitor will never see. See How to Monitor Authenticated APIs with Bearer Tokens and Custom Headers.
6. Add cron job or heartbeat monitoring
Background jobs fail silently more often than teams expect.
If your backups, imports, report generators, billing syncs, or queue workers stop running, the damage may not be visible for hours or days.
Checklist:
- Add heartbeat monitoring for every critical scheduled task
- Alert when a job does not report in on time
- Separate critical jobs from low-priority jobs
- Review heartbeat thresholds after schedule changes
Related guide: Cron Job Monitoring: How to Catch Silent Failures in Background Tasks.
7. Track response time, not just uptime
A slow site can be just as damaging as a down site.
Checklist:
- Track response time trends for key endpoints
- Set realistic latency thresholds
- Alert on sustained degradation, not one-off spikes
- Review performance by region if you serve global users
This helps you catch incidents before they become full outages.
8. Use multi-region checks where possible
Single-location monitoring can create false positives and blind spots.
Checklist:
- Check critical services from multiple geographic regions
- Require consensus before sending high-severity alerts when possible
- Compare latency across regions
- Review regional failures separately from global failures
If your users are distributed, your monitoring should be too. See Multi-Region Monitoring: Why Location Matters More Than You Think.
9. Route alerts to the right people
Monitoring is useless if alerts go to the wrong place.
Checklist:
- Send alerts to at least two channels
- Use chat for visibility and email/SMS/phone for action
- Define who owns each critical monitor
- Make sure alerts are tested, not just configured
For many teams, a simple setup is enough:
- Slack, Teams, or Discord for team awareness
- Email or SMS for the person expected to respond
10. Add escalation rules for critical incidents
If the first person misses the alert, what happens next?
Checklist:
- Define a primary responder
- Define a backup responder
- Set an escalation delay for unacknowledged incidents
- Document who owns after-hours response
If you need help structuring this, read Incident Escalation Policy Guide: How to Make Sure Critical Alerts Reach the Right Person.
11. Set up a status page before you need one
A status page is easiest to build before the outage, not during it.
Checklist:
- Create a public status page
- Add your critical services and components
- Decide who can post updates
- Prepare a simple incident update template
- Make sure support knows where to send customers
A status page reduces confusion, support load, and repeated “is it just me?” questions. Related reading: How to Build a Status Page That Increases Customer Trust.
12. Configure maintenance windows
Planned work should not create unnecessary alert noise.
Checklist:
- Schedule maintenance windows before deployments or infrastructure work
- Suppress alerts only for the affected monitors
- Keep the window as narrow as possible
- Re-enable normal alerting immediately after the change
This prevents alert fatigue and keeps your team from ignoring real incidents later.
13. Review alert noise and false positives
Too many alerts train teams to ignore all alerts.
Checklist:
- Review noisy monitors monthly
- Remove alerts nobody acts on
- Tune thresholds based on real performance
- Use consecutive failure checks to reduce transient noise
If this is a recurring problem, read Alert Fatigue: How to Create Notifications That Actually Get Acted On.
14. Test your monitoring setup regularly
A monitor that has never been tested is only theoretically useful.
Checklist:
- Trigger test notifications for every alert channel
- Simulate a failure on a non-critical endpoint
- Confirm the right people receive the alert
- Confirm recovery notifications are sent too
Testing turns monitoring from configuration into an actual incident response tool.
A practical starter setup for small teams
If you want the shortest useful version of this checklist, start here:
- 1 homepage monitor
- 1 app or API monitor
- SSL certificate monitoring
- 1 health endpoint monitor
- 1 heartbeat monitor for your most critical background job
- alerts to chat + email/SMS
- a simple status page
That setup alone catches a surprising number of real-world failures.
Quarterly monitoring review checklist
Monitoring should evolve with your product.
Every quarter, review:
- New domains, subdomains, or environments
- New APIs or critical user flows
- New background jobs or integrations
- Alert ownership changes
- Escalation coverage for vacations and team changes
- Status page components and messaging
- Thresholds that no longer match production reality
This keeps your monitoring aligned with the system you actually run today, not the one you had six months ago.
Common mistakes this checklist helps you avoid
Monitoring only the homepage
Your homepage can be up while login, checkout, or the API is broken.
Forgetting background jobs
Silent failures in cron jobs and workers often create the most confusing incidents.
Sending alerts to one person only
If that person is asleep, in a meeting, or on vacation, your incident response stalls.
No status page
Without a status page, support becomes your incident communication system.
No review process
Monitoring coverage decays over time unless someone owns it.
Final thoughts
A strong website monitoring checklist is not about adding every possible monitor on day one.
It is about covering the failure modes that matter most, routing alerts to the right people, and making sure your team can respond quickly when something breaks.
Start simple. Cover the essentials. Review regularly. Improve as your product grows.
That is how you build monitoring that actually helps during real incidents.
Build your monitoring checklist before the next outage
Start monitoring with Webalert to track uptime, SSL, DNS, APIs, cron jobs, and incident alerts from one place.