You might think I'm a tiny bit biased because my co-workers created this tool, or because I've been using it in Beta for the last few weeks. But trust me, this is legit one of the nicest and most useful monitoring tools I've ever used. And this is me being hyped!
Coming from someone who has been battling with website performance and trying to hit >99% uptime for my own products in the past, Synthetics hits home just right. It's like having a performance audit running every minute making sure your systems are operational and running at optimal capacity. The opportunities are endless with what you can do with it. From running end-to-end tests for APIs, or UI tests for websites. You can even write freaking Puppeteer scripts!
I love it, and I sure hope you give it a try. :)