Do you want to have visibility on your Tenant´s Management Group hierarchy - document it in csv, html and markdown?
AzGovViz is a PowerShell based script that iterates your Azure Tenants Management Group hierarchy down to Subscription level. It captures most relevant Azure governance capabilities such as Azure Policy, RBAC and Blueprints and more. From the collected data AzGovViz provides visibility on your Hierarchy Map, creates a Tenant Summary and builds granular Scope Insights on Management Groups and Subscriptions. The technical requirements as well as the required permissions are minimal.
The Azure Optimization Engine (AOE) is an extensible solution designed to generate optimization recommendations for your Azure environment. See it like a fully customizable Azure Advisor.
blog series on the tool: Augmenting Azure Advisor Cost Recommendations for Automated Continuous Optimization