Cloud computing allows the user to compute over the internet by creating virtual data centers. The virtual data center provides necessary components like software, hardware, and data resource to compute the user’s order. With this system, when the user needs to connect to the cloud system, the companies don’t need to have additional on-premises infrastructure on their sides. Also, with the cloud system, the company can easily upgrade or downgrade their system according to the user and the company requirements.



There are three different type of cloud computing models:

• Private Cloud
• Public Cloud
• Hybrid Cloud

A private cloud model mostly uses for highly secure resource and on the organization private network. For example, banks, medical institutions, etc. because this type of organizations has very sensitive data and information. Therefore the resources should have the high-security level, and the private cloud model should be dedicated to only one organization.



A public cloud model is one of the standard cloud models. It is provided by third-party companies and it makes resources available to be used by the client over the network. For example, one organization website can use cloud computing to show their company products with using one of the cloud storage providers.



A hybrid cloud model is a mix of the private and public cloud model. With hybrid model one can design some resources on public and run in a public cloud model, at the same time the other resource can be in private cloud and run in a private cloud model.