This is a tool which isn’t created by me, but it is so useful, that I had to share this.
Azure Resource Inventory (ARI) is a powerful script written in Powershell to generate an Excel report of any Azure Environment you have read access.
This project is intended to help Cloud Admins and anyone that might need an easy and fast way to build a full Excel Report of an Azure Environment.
Azure Resource Inventory (github)
Powershell Administrator Blog 