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Services are offered over the public internet and shared across multiple organizations (e.g., Google Cloud Platform ).

Provides fundamental resources like virtual machines, storage, and networks. Examples include Amazon EC2 and Microsoft Azure Virtual Machines .

Dedicated solely to a single organization, providing enhanced security and control.

Delivers complete software applications over the internet on a subscription basis, such as Gmail , Dropbox , or Salesforce . Deployment Models

Depending on security requirements and organizational needs, clouds are deployed in four main ways:

A combination of public and private clouds, allowing data and applications to be shared between them for greater flexibility.