We mainly went from Icinga. It is like Nagios. So, we were using Nagios monitoring, but because the monitoring was so reactive, we wanted something new that could help us with the business requirements. We needed something that could host the metrics and data from multiple sources and can be used to correlate. It was because of the necessity we moved away from Nagios, which is very focused on systems monitoring, to something that uses a time series database and has a simple SQL query language that we can use to correlate data and create trends.

I use Datadog, New Relic, Grafana and Prometheus. I switched to Influx DB because of its user interface.

I often use another product as well to obtain a graph for the data centers and for virtualization. I can't remember the name of it, however.

I haven't used another similar product before this one.