1. The three basic cloud service models are as follows:
   1. Infrastructure as a Service (IaaS)
   2. Platform as a Service (PaaS)
   3. Software as a Service (SaaS)
2. The four basic cloud deployment models are as follows:
   1. Public cloud
   2. Private cloud
   3. Hybrid cloud
   4. Community cloud 
3. You use one or more cloud provider or solution. Either different public, private or hybrid clouds or you use different cloud service models from different cloud  provider. 
4. Datacenter of Azure Global Regions are connected to the Azure Global Backbone and Azure Global Active Directory. Sovereign Regions stand alone and built for a dedicated purpose, for example to enforce government restrictions, purposes or to fit customer requests. 
5.  The Edge Datacenter connects the Microsoft Global Backbone to internet exchanges, network providers and customers. Within a production datacenter the Microsoft Cloud workloads are calculated and operated, a...