Understanding Cloud Computing Models

Cloud computing refers to the delivery of computing services—including servers, storage, databases, networking, software, analytics, and intelligence—over the Internet (“the cloud”) to offer faster innovation, flexible resources, and economies of scale. Typically, cloud computing providers charge for cloud services based on usage, similar to utility services.

Recognized Cloud Computing Deployment Models

Several models define how cloud services are deployed and accessed. The primary recognized models include:

• Private Cloud: This cloud infrastructure is operated solely for a single organization. It can be managed internally or by a third party and hosted either internally or externally. It offers a higher level of security and control.
• Hybrid Cloud: This model combines public clouds and private clouds, bound together by technology that allows data and applications to be shared between them. It provides flexibility and optimizes workloads.
• Community Cloud: This cloud infrastructure is shared by several organizations and supports a specific community that has shared concerns (e.g., security, compliance, jurisdiction). It is often managed by one or more of the organizations in the community.
• Public Cloud: This is the most common model. Resources like servers and storage are owned and operated by a third-party cloud service provider and delivered over the internet. Examples include Amazon Web Services (AWS), Microsoft Azure, and Google Cloud Platform.

Identifying Non-Cloud Computing Models

The question asks to identify which option is not a model of cloud computing. Based on the standard definitions:

• Private Cloud is a valid model.
• Hybrid Cloud is a valid model.
• Community Cloud is a valid model.

'Natural Cloud', however, does not represent a recognized deployment or service model within the field of cloud computing. The term 'natural cloud' typically refers to atmospheric clouds (water vapor in the sky) and is unrelated to IT infrastructure or services.

Therefore, 'Natural Cloud' is the correct answer as it is not a model of cloud computing.