Maybe someone in the community knows about this:
What’s the best website monitor tool there is?
I’m helping a company that have approximately 150 sites on their server, only Wordpress/Woocommerce solutions. Sometimes “things” happens and sites go down. Of course they want to know this before their clients do.
If I had to give a one word answer for uptime only, I’d say Pingdom. We use UptimeRobot which used to be a steal but has recently bumped their prices. UptimeRobot isn’t quite as nice.
For understanding application performance, you probably want New Relic from that list. There are better options but probably not anything that would work well on one server hosting 150 sites. You’ll have to pay a lot of money to use New Relic on that many sites (their pricing is optimized for product companies), so I would recommend monitoring all 150 with Pingdom or UptimeRobot and then using New Relic on the top troublemakers. Learnings from that will apply to many of the other sites.