You can apply tags to all of your Azure resources. This way, you add extra metadata to the resource group, which can be used to logically organize them into a taxonomy. Each tag consists of a name and a value pair. For instance, you can set the name to Environment and the value to Demo, or you can set the name to Maintenance Window and the value to Saturday 9 AM. After applying these tags, you can easily retrieve all the resources with the same tag name and value. This can be a useful feature for billing or management purposes.

For billing based on your tags, you can use the assigned tags to group the billing for certain resources; for example, if you run VMs and databases for different environments (test, pre-production, and production), you can use tags to categorize the costs. These tags will then show up in the different...