Website is down
Uptime monitoring should catch the failed response quickly.
Guide
Synthetic Monitoring vs Uptime Monitoring
Uptime monitoring and synthetic monitoring are related, but they answer different questions. Uptime monitoring asks whether a page or endpoint responds. Synthetic monitoring asks whether a user-like action or workflow still works.
Why the distinction matters
Teams often start with uptime monitoring because it is simple and useful. If a page is down, the business needs to know quickly. But many high-impact failures do not look like downtime. A login flow can fail, a checkout button can stop working, or an API-powered page can load without data.
That is where synthetic monitoring and journey monitoring become useful. They help verify that a customer can complete an action, not just reach a URL.
Synthetic monitoring vs uptime monitoring at a glance
Use uptime monitoring for availability coverage, then add journey checks where customer actions matter.
| Criteria | Uptime monitoring | Synthetic monitoring | NorthDuty angle |
|---|---|---|---|
| Primary question | Is the page or endpoint reachable? | Can a simulated user complete an action? | NorthDuty combines uptime, page health, UI diffs, and journeys in one project. |
| Best for | Availability, SSL, DNS, redirects, and response timing | Login, signup, checkout, forms, and multi-step workflows | Teams that need both availability and customer-facing reliability. |
| Common gap | A page can return 200 OK while still being broken | Synthetic checks can miss visual regressions if they only test the flow | Daily UI diffs help catch visible changes alongside journey failures. |
| Setup style | Usually a URL and alert destination | Usually steps, scripts, or a flow definition | NorthDuty suggests journeys with AI or lets teams write them in plain text. |
Examples of when each type helps
The right monitoring type depends on the failure mode you need to catch.
Checkout fails after cart
Synthetic or user journey monitoring is better because the failure appears several steps in.
A CTA disappears
Visual change monitoring is needed because the page may still respond successfully.
The page loads with missing data
Website health and API call tracking help reveal failed dependencies behind the rendered page.
Best practices for combining both
Most important websites need layered monitoring, not a single check type.
- Use uptime monitoring on every business-critical route
- Add synthetic or journey monitoring to conversion and account-access flows
- Watch JavaScript errors and API calls on JavaScript-heavy pages
- Add visual diffs where layout, content, and CTAs affect conversion
- Keep alerts understandable for the people who need to respond
- Review monitoring depth whenever a page becomes more important to the business
Conclusion
Uptime monitoring is the foundation. Synthetic monitoring is the next layer for customer actions. Website health and visual monitoring close the gaps that both can miss alone.
NorthDuty brings those layers together so teams can monitor whether pages are reachable, healthy, visually intact, and usable for real customer journeys.
Related NorthDuty Pages
Keep exploring the feature pages and commercial routes connected to this topic.
Feature
Uptime Monitoring
Monitor uptime every 5 minutes with HTTP, SSL, DNS, blank-page detection, broken resources, JavaScript errors, and API call tracking.
Explore Uptime MonitoringFeature
User Journey Monitoring
NorthDuty AI suggests 5 website journeys. Enable them in one click or describe a custom multi-step flow in plain text.
Explore User Journey MonitoringFeature
UI Changes Monitoring
Get daily screenshots and pixel diffs for key website pages so unexpected design, content, and layout changes are easier to review.
Explore UI Changes MonitoringFeature
Website Monitoring
Monitor uptime every 5 minutes, daily UI changes, and AI-suggested user journeys from one NorthDuty project.
Explore Website MonitoringPricing
Pricing
Explore NorthDuty pricing for website monitoring covering uptime checks, UI change detection, and user journey monitoring.
Compare pricing plansFrequently Asked Questions
Short answers that summarize the practical takeaways from this guide.
Is synthetic monitoring the same as uptime monitoring?
No. Uptime monitoring checks whether a page or endpoint responds, while synthetic monitoring simulates user-like actions or workflows.
Do I need synthetic monitoring if I already have uptime monitoring?
You likely do if important actions such as checkout, signup, login, or form submission can fail while the page still responds.
What does NorthDuty add beyond uptime monitoring?
NorthDuty adds website health signals, JavaScript error and API call visibility, daily UI change detection, and AI-suggested or plain-text user journeys.
Call To Action
Start monitoring your website with NorthDuty today.
Use NorthDuty to combine uptime monitoring, website health checks, UI change detection, and user journey monitoring in one website project.