WHO
Cloud computing is used by almost everyone with internet access, from individual consumers to large enterprises. Individuals use services like Gmail, Yahoo Mail, iCloud, and Dropbox for personal tasks, while businesses of all sizes benefit from cloud hosting’s scalability, cost efficiency, and mobility.

WHAT
There are three main types of cloud computing:

1. Public Cloud – A multi-tenant environment where users share the same infrastructure. It’s cost-effective and ideal for general use.
2. Private Cloud – A single-tenant environment with dedicated infrastructure, typically used by organizations that require high security and compliance (e.g., PCI, HIPAA).
3. Hybrid Cloud – A combination of both public and private clouds, where sensitive data resides on private infrastructure while less sensitive data uses a public cloud for flexibility and cost savings.

WHERE
Cloud hosting services are available globally. National providers like Amazon Web Services (AWS) and Rackspace have data centers worldwide, while local providers can be found in major cities across the U.S. Using services like Colocation.info allows companies to find the best provider for their needs.

WHEN
Businesses need cloud computing when they seek flexibility, scalability, or cost-efficiency, such as when infrastructure reaches its “end of life” or for startup firms needing to scale quickly. It’s also used for secondary or disaster recovery hosting.

WHY
Cloud computing provides easy access to resources over the internet, scalability, cost savings, and flexibility. Companies can adjust their resource needs as business demands change, without worrying about the upfront costs of infrastructure or compliance. Hybrid solutions are ideal for combining public and private infrastructures to meet various business needs.