There are a lot of small things that you need to pay attention to, otherwise you may end up having issues in the long run. When you're managing a single subscription and a small number of resources, it may look simple and not important to create some ground rules. But as the number of subscriptions and resources starts increasing, you may find chaos and it may be too late to turn back. In these situations, it's hard to correct mistakes and get back on the right path.
Azure best practices
Naming convention
It's very important to set the naming convention for subscriptions, resource groups, and resources. Your first subscription will probably have a name similar to Pay-as-you-go. And if you have a single subscription...