Which of the following are the main deployment models of cloud computing?

The main deployment models of cloud computing encompass public clouds, private clouds, hybrid clouds, and community clouds.

Public clouds are offered over the internet and shared among multiple organizations, allowing users to take advantage of cost savings and scalability. Private clouds, on the other hand, are dedicated to a single organization, providing enhanced security and control over the infrastructure. Hybrid clouds combine elements of both public and private clouds, allowing for data and application portability, while community clouds are shared by several organizations with similar interests, needs, or compliance requirements.

This framework of deployment models provides organizations with a variety of options to suit their specific needs in terms of security, cost, flexibility, and collaboration. The inclusion of these four specific models distinguishes them as the foundational categories in cloud deployment, making this the correct choice. Other options may propose different combinations that do not encompass the standard classifications established in cloud computing.