Live demo
See landing page monitoring with a real incident in it
This is the actual interface, not a video, loaded with INC-2291: a deploy dropped one prefix from the route table, the catch-all answered 200 OK with a page that said it could not be found, and three campaigns spent $12,480 into it before anyone acted. You get the alert that fired, the war room the next shift read, and the decision that would have stopped the spend in fifteen minutes.
New to the idea? Start with what landing page monitoring is, or read how the check works and why a soft 404 is the expensive kind.