Public and private clouds are similar in nature; however, their differences make each tailored to perform completely different tasks. Public clouds are based on the sharing of physical hardware from the use of a third-party provider. Public clouds are ideal for organizations like Amazon Web and Google Cloud, where the infrastructure needs to be shared with many users. They can also be cost-effective and offer high scalability via reduced hardware demands.
Private clouds are individual clouds designed for a specific business. These are very secure and offer an immense amount of customization options. By using cloud bursting during a data spike, resources used can be switched to a public cloud, thus saving on overages. Although, private clouds are typically costly due to the many advantages it has over public clouds.
A hybrid cloud is also an option. It is operated by using private and public clouds with both internal and external providers. This option is an excellent choice since it offers the many benefits of public and private clouds combined.
Earls, Alan. (2017). Public Cloud. Retrieved from http://searchcloudcomputing.techtarget.com/definition/public-cloud.