There are three types of clouds − Public, Private, and Hybrid cloud.
Public Cloud
In the public cloud, the third-party service providers make resources and services available to their customers via Internet. Customer’s data and related security is with the service providers’ owned infrastructure.
Private Cloud
A private cloud also provides almost similar features as a public cloud, but the data and services are managed by the organization or by the third party only for the customer’s organization. In this type of cloud, major control is over the infrastructure so security-related issues are minimized.
Hybrid Cloud
A hybrid cloud is the combination of both private and public cloud. The decision to run on private or public cloud usually depends on various parameters like sensitivity of data and applications, industry certifications, and required standards, regulations, etc.