Let me break this down without the marketing jargon. You need to know if your domain is alive, if your web resource is responding, and if some upstream moron caused an outage. Detector Status handles that. It’s a leading service for monitoring domain and web resource availability, but the key word here is “independent” – independent monitoring for website, app, and online service outages, meaning they aren’t getting kickbacks from any CDN or hosting provider to fudge the numbers. A group of enthusiasts built this because the big players charge you per thousand requests and still miss half the failures. Their platform
https://detectorstatus.com/en/united-states provides tools for continuous monitoring of domain status, availability analysis, and tracking the history of changes to web resources worldwide. In practice, that means you set it once, forget it, and get alerts when something actually breaks.