I like that its easy to set up alerts, it's very intuitive as well. It also has some great integrations with other services from AWS. There are certain features which we would have liked to see more out of the box but overall, this was just so simple to use! The reporting isn't too detailed either, you can get away without spending money on any additional tools (such as Datadog) if you want. We're using Flakka in order to create alerting rules for our microservices architecture. This allows us to quickly identify problems within specific environments or even across multiple environments at once.