An IT services study carried out in 2012 by KPMG showed that more businesses are evaluating, moving towards, or using cloud computing. No matter which business you are in, cloud computing is becoming a necessary technology.
Here are the main types of cloud computing:
1. Public Cloud
This cloud infrastructure is hosted by a provider. Examples of public clouds include Google Cloud Computing, Microsoft Azure, and Amazon AWS.
With a public cloud model, users have no control over where the infrastructure is located. The service provider offers the same infrastructure to each user, with limited configuration options and variable availability.
Public clouds are a good option for application code development and testing, collaboration projects, or for purchasing incremental capacity as needed.
2. Private Cloud
This type of cloud infrastructure is operated by a provider or organization for a specific user. With a private cloud, businesses can host their applications in the infrastructure, and have control and security features that are often lacking in public clouds.
Private cloud can be hosted on-premise (within the organization’s own facility) or at an external site.
3. Hybrid Cloud
Hybrid clouds are a bundle of multiple clouds that are bound together, but operate separately, and can be deployed using different models. Hybrid clouds increase flexibility by enabling users to leverage the resources of other cloud providers. For example, users can augment a private cloud infrastructure with the resources of public cloud to manage unexpected increases in workload.
4. Community Cloud
This is a shared multi-user service that is managed and operated by a third party service provider or several participating entities. This type of cloud is a hybrid cloud built for multiple companies with similar cloud requirements who work together.
Community clouds can either be on-premise or off-premise. The cloud infrastructure offers participating users the benefits of public cloud with additional levels of security, privacy and policy compliance usually associated with private clouds.