While most cloud providers have a monitoring system in place, we prefer to run our own. The main reason is that if you drill down you want to be able to monitor the services that are relevant to your business. This often means you monitor very specific services or build your own plugins to scan whatever you find important.
What to use
There are many monitoring solutions out there that offer a multitude of plugins and add-ons. There are two aspects to consider. You need a collector and a system to get the information to the collector. Some systems have a server