[BringerOfChaos]

@dudeinjapan, check out https://grafana.com/products/cloud/ The first line on the page says, "Your observability, managed as a service"

It might not fit your use case...but it might.

[dudeinjapan]

We used self-hosted Grafana until late 2020. We looked at Grafana cloud but ultimate chose a combination of NewRelic One for metric monitoring and Lightstep for request tracing. Those two were the "best-of-breed" for their respective areas with the best pricing for our use case.