(ISC)2 Certified in Cybersecurity Practice Exam

A public cloud is characterized by the provision of services and resources that are shared among multiple organizations over the internet. This model allows various users, typically from different enterprises, to access and utilize the same infrastructure and services. Public clouds are designed to offer scalable resources and services such as storage, processing power, and applications in a cost-effective manner by leveraging a shared environment.

In contrast, exclusive access for only one organization refers to a private cloud, where resources are dedicated solely to one entity. Cloud services offered solely by one business may imply a private or managed service rather than a public cloud, which caters to a broader market. Lastly, a cloud that is not connected to the internet indicates an isolated environment, which does not align with the principles of a public cloud.

Thus, the essence of a public cloud lies in its shared infrastructure that allows multiple organizations to utilize the same services and resources efficiently and economically.