There are three main types:

• Public Cloud: Services are delivered over the public internet and shared across multiple organizations.
• Private Cloud: Services are maintained on a private network.
• Hybrid Cloud: Combines both public and private clouds to allow data and applications to be shared between them.

Benefits include cost savings, scalability, flexibility, mobility, disaster recovery, and security.

• Infrastructure as a Service (IaaS): Provides virtualized computing resources over the internet.
• Platform as a Service (PaaS): Provides hardware and software tools over the internet.
• Software as a Service (SaaS): Delivers software applications over the internet.

Cloud providers implement strong security measures including encryption, access controls, and monitoring, but users must also follow best practices for cloud security.

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