With the classic Azure system management, you could previously manage only one resource on the Azure platform at the same time. But what about more complex applications, as are common today? The infrastructure of today's applications typically consists of several components—a virtual machine, a storage account, a virtual network, a web app, a database, a database server, or a third-party service. To manage such complex applications, with the first preview of the Azure Management Portal 3.0, the concept of resource groups was introduced.
You now no longer see your components as separate entities, but as related and interdependent parts of a single entity. So, you will be able to manage all the resources of your application simultaneously. As an instrument for this type of management, ARM (and ARM tools) was introduced.
Enough of the preliminary remarks. Let's take a look at ARM in detail with the following diagram:
As you can see in the preceding diagram...