Earlier quoted context omitted.
Can you expand? As someone who maintains a large-ish prometheus/grafana installation on prems I don't know what we're missing! We have a couple of custom metrics that we developed in prometheus and the OSS plugins/dashboards look great.
Datadog has incredible integration with clouds (AWS and other), databases (postgresql, mysql, cassandra) and middleware (haproxy, kafka). It can capture all the metrics from all these out of the box with minimal effort, whereas you have to crawl hundreds of broken plugins for prometheus to get one third of that. If you're using clouds (AWS/Azure/Google). Datadog can capture all the AWS metadata automatically and merg…
Interesting, I haven't had this experience. I monitor the DBs and middleware you mention and the OSS plugins + OSS grafana boards worked quite out of the box. For what is worth we have around ~20 different technologies for DB and middleware.
We aren't using cloud since we have our own datacenters so there could be a big difference in usage.
As far as prometheus doesn't scale I don't know I agree. We have more than 5k hosts currently on it and is working fine. We do use some strategies like recorded queries and federation which are well documented.