AKA "The Shared Cloud"
This multitenant environment keeps your data in a shared storage network. Think of it as an apartment building filled with tenants and looked after by one landlord. Similarly, public cloud users share the computing resources of all the
servers in that system.
Examples: Amazon, Azure, Office 365, etc.
AKA "The Dedicated Cloud"
This environment is only accessible to users of a single organization and all resources are provided behind a secure firewall. No apartments here, only houses. All accounts have their own server with exclusive access to resources in that system.
Examples: Azure Private Cloud, Fpweb.net Cloud.