Deployment Models

Private cloud (Or On Premise)

·       A private cloud is a server, data centre, or distributed network wholly dedicated to one organization.

Ex: Openstack or VMware

Public cloud

·       A public cloud is a service run by an external vendor that may include servers in one or multiple data centres.
·       Public clouds are shared by multiple organizations.
·       Using virtual machines, individual servers may be shared by different companies, a situation that is called "multitenancy" because multiple tenants are renting server space within the same server.

Ex: AWS, Azure, GCP

Hybrid cloud

·       Hybrid cloud deployments combine public and private clouds, and may even include on-premises legacy servers.
·       An organization may use their private cloud for some services and their public cloud for others, or they may use the public cloud as backup for their private cloud.

Multi cloud

·       Multi cloud is a type of cloud deployment that involves using multiple public clouds.
·       In other words, an organization with a multi cloud deployment rents virtual servers and services from several external vendors, this is like leasing several adjacent plots of land from different landlords.
·       Multi cloud deployments can also be hybrid cloud, and vice versa.

Multi Cloud ßà Hybrid Cloud