How to move an Azure Subscription to a different Tenant

In this post I will explain how to move an Azure Subscription to a different Azure Tenant (Directory). I often use this to move my MPN subscription to a Greenfield tenant to test new functionalities without worrying about settings I've made in the past. But this can also be use to bundle multiple Visual Studio subscriptions in one tenant or for any other reason.   Demosetup   I w...