Azure provides in-depth monitoring of your databases and their usage. You can add monitoring alerts and check the network logs from your control panel itself. The information is presented in a neat and proper way, to provide as many details on-screen as possible.

To check the monitoring, log in to Azure portal and click on Monitor in the left menu. You should see a screen similar to the following screenshot:

Now, click on Metrics in the left menu. It should open a screen similar to what is shown in the following screenshot:

You can change the filter and database to view the metrics for those databases.

You can also check the activity log of your account and resource group. Click on activity log from the left menu and choose your resource group and date range to view the activities. Refer to the following screenshot for reference:

This is a great way to check for suspicious activity.

Now, for the usage part, you can go to the cost management + billing screen to view the current usage of your account. I have got a free account for the month and need to upgrade it with a plan for further operations.

Explore more options in the Monitor screen and see what works for you.

Before we wrap up, let's quickly look at the security provided by Azure for our Cosmos DB.