Azure Monitor is an insightful and powerful tool which notifies me right away when the performance gets compressed and I can integrate it with other Azure tools for better views and detailed insights.

Full stack alerting tool that does its job, but requires a lot of time and effort to set up properly and fine tune so you don't get overwhelmed with notifications and end up spending too much for log ingestion/storage. Fairly complex and it would be nice if it was simpler and quicker to get going and use. Navigating the Microsoft bill can be dreadful when you're trying to figure out what is causing your cost increases. Microsoft support leaves much to be desired.