The category
Landing page monitoring
Landing page monitoring is the continuous checking of the page a paid click actually lands on, to verify that it can still convert. Not that a server answered — that the offer is still there, on the device the visitor is holding.
It is a different question from the one uptime monitoring asks, and the gap between the two questions is where the expensive failures live. All of them return 200 OK.
What landing page monitoring catches
The page says it is gone
A CMS catch-all, a route with no match, a deleted product page. The visitor reads “page not found”; the server says 200 OK. The status code is fine, so status-code monitoring reports it healthy.
The click lands somewhere else
A retired campaign URL that now bounces to a sign-in wall or the homepage. The visitor never sees the offer they clicked. The 200 belongs to wherever it ended up, not to your landing page.
The page renders broken
The page comes back a fraction of its usual size: a template that lost its body, a build that shipped an empty shell, a CDN that dropped the assets. It looks wrong to a human and fine to a machine. Every check that stops at the status code sees a healthy page.
Fine on your laptop, broken for the click
A consent wall, an app-install interstitial or a geo-redirect that only fires for a phone — which is where most paid clicks come from. A desktop check never sees it, because it never asks as a phone.
The page is refusing visitors
A 401, 403, 429 or 503 — a login wall left on by accident, a rate limiter, a WAF rule that started matching your own traffic. Recorded as blocked rather than down, because the fix is different.
Conversions stopped while spend carried on
The page is up, the page is whole, and nobody is converting. The funnel broke somewhere the page cannot show you. Nothing about the page is wrong, so no page check will ever fire.
How often to monitor a landing page
Match the interval to the spend rate, not to how often the page changes. The question is how much money passes through the page between two checks.
The last row is what actually happened over 213 minutes, and it is the only figure here that is not arithmetic.
Does it need access to your ad accounts?
No. Checking a destination needs the URL and nothing else — no OAuth, no account access, no review process, about sixty seconds. Connecting an ad account is optional and does exactly one thing: it turns “this page is broken” into “this page is broken and it is costing $58.59 a minute”, which is the sentence that gets somebody out of bed.
Why monitoring is not the hard part
Of the 213 minutes INC-2291 ran, 6 were detection and 207 were a person asleep. A monitor that finds the problem in six minutes and then waits three hours for somebody to look at a dashboard has saved nothing. So the alert carries a link and a prepared, reversible action, and it goes to whoever is awake rather than to whoever owns the account.
The six checks, and the reason for each →
See it monitoring something
The demo is a working copy of the product with a soft-404'd destination already in it — the check that caught it, the incident it opened, and the decision that stopped the spend.