A hybrid cloud combines private and public clouds. It is defined as a private cloud environment at the consumer's premises, as well as a public cloud infrastructure that the consumer uses. Therefore, there is no difference if you combine major resources together, such as web servers in the cloud, and keep your data on-premise. A hybrid cloud is already provided when you synchronize your identities from your Active Directory to Azure AD to use Office 365 or other SaaS cloud solutions. Every time you sync, bind, or merge local resources, with or to public cloud resources, you create a hybrid cloud solution.