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 Tenant's Management Group hierarchy down to Subscription level. It captures most relevant Azure governance capabilities such as Azure Policy, RBAC and Blueprints and a lot more. From the collected data AzGovViz provides visibility on your HierarchyMap, creates a TenantSummary and builds granular ScopeInsights 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