https://cloud.google.com/monitoring/uptime-checks https://cloud.google.com/monitoring/uptime-checks If I remember correctly you can specify a bunch of regions

https://cloud.google.com/monitoring/uptime-checks https://cloud.google.com/monitoring/uptime-checks If I remember correctly you can specify a bunch of regions for the health checks to originate from. It was super simple to setup (point and click) and it's nice that it's decoupled from the rest of my infrastructure. When there's a failure I get a notification.