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What is Cloud Computing?

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Cloud computing is the delivery of services like storage, databases, software, and servers over the internet ("the cloud"). Instead of owning physical hardware, you use resources online and only pay for what you use.

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Cloud service models

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Types of cloud

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1. Public Cloud
   • Services are offered to anyone over the internet.
   • Example: AWS, Azure, Google Cloud.
   • Cost-effective but less control over data.
2. Private Cloud
   • Services are used by one organization only.
   • Example: A company’s private servers.
   • More secure but expensive to manage.
3. Hybrid Cloud
   • A mix of public and private clouds.
   • Example: Storing sensitive data in private cloud, other tasks in public cloud.
   • Flexible and balances cost and security.
4. Multi-Cloud
   • Use of multiple public cloud providers.
   • Example: Leveraging unique features from different providers or migrating between them.
   • Requires managing resources and security across providers.