You can get started in Azure. But soon it becomes time to build your subscriptions for your enterprise. For example, giving unrestricted access to developers can make your devs very agile, but it can also lead to unintended cost consequences. In addition, you will want to have requirements to demonstrate compliance for security, monitoring, and resource access control.
In this article we help organize some thoughts around the strategy and plan for building out your cloud, including a plan that you can put into Azure DevOps.
The Cloud Adoption Framework provides guidance for in depth analysis and preparation for your cloud.