How are you monitoring your infrastructure?
Curious about what everyone is using these days to monitor their servers and infrastructure?
Do you outsource to the likes of Nixstats, Site24x7, or HetrixTools?
Or "self-monitor" with something like Zabbix, Checkmk, Prometheus+Influx+Grafana, PRTG, Observium, etc...
If you do it in-house, are you monitoring from multiple locations? If so, how?
PS - I'm not asking about website uptime monitoring like pingdom and uptimerobot.