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When checkout fails, you need a true signal fast. The market offers three broad approaches. They answer different questions. Mixing them up is how teams spend an hour in the wrong place.
The vendor (or you) updates a status page from internal checks and incident process. Useful primary source. Not independent measurement.
A tool pings a URL on a schedule from one or more locations you configure. Good for "is my endpoint answering?" Limited for "is a third party down for everyone?"
Someone outside your network and outside the vendor probes the real host and can place that reading next to the vendor's self-report. That is the StackWitness approach for dependencies.
Use the guides below when you are shopping categories, not when you want a hit piece. We describe approaches with stable facts. We do not invent competitor prices, SLAs, or feature lists that go stale.
Hosted, self-hosted, uptime-tool pages, and independent truth pages.
Pingers, multi-location synthetics, APM, and outside dependency measurement.
Need-based roundup for top and best status page queries.
| Self-report | Uptime checks | Independent measurement | |
|---|---|---|---|
| Who runs the probe | The operator of the page (often the vendor) | You (via a monitoring product) | An outside party on its own infrastructure |
| Typical question answered | What does the operator currently claim? | Is this URL answering from the check locations? | Can we reach this dependency host, and what does the vendor claim at the same time? |
| Partial / regional failure | Depends on internal process; often delayed or coarse | Visible only if checks cover the right places | Shown per region when multi-region probes disagree |
| Answers "them or us?" | No (it is their story) | Only for targets you configured | Designed for that question on dependencies |
Also read the blog for how we separate reachability from self-report, and the free live dependency truth pages for a public example of the method.
StackWitness is independent dependency and uptime monitoring with honest status pages. We measure the services you depend on ourselves, from multiple regions, and read the vendor's own status feed alongside, so when something breaks you know within minutes whether it is your provider or you. When our regions disagree, we show it as measured instead of averaging it into a comfortable green.
The paid product gives you your own monitors, clear attribution the moment a third party is the cause, and a customer-facing status page backed by that same measurement. It is the evidence you want in front of customers and your own team at 3am.
Start monitoring See live dependency truth
Public dependency truth pages are free to read. Paid product: your monitors, attribution, and a status page backed by the same measurement discipline. How StackWitness works · Blog.
No. These pages group options by approach so you can match the job (customer comms, URL checks, independent dependency measurement) without treating marketing claims as measurement.
No. Prices and packaged feature lists change. We describe stable approaches. Check each vendor for current pricing.
We probe public hosts for reachability and read public vendor status feeds. Reachable means the host answered our probe under our rules. It is not a full product audit or a compliance verdict.
Start with evidence you can read. Public dependency truth pages use the same measurement discipline as the paid product.