Explain the concept of cloud computing 

Key Concepts of Cloud Computing

1. On-Demand Self-Service:

   • Definition: Users can provision computing resources as needed without requiring human interaction with service providers.
   • Examples: Launching virtual machines, scaling storage, or deploying applications through a cloud service provider's interface.

2. Broad Network Access:

   • Definition: Cloud services are accessible over the network from a variety of devices, such as smartphones, tablets, laptops, and desktops.
   • Examples: Accessing applications and data via web browsers or cloud-based applications on various devices.

3. Resource Pooling:

   • Definition: Cloud providers use multi-tenant models to pool computing resources and serve multiple customers from a shared infrastructure.
   • Examples: Virtualization technologies enable multiple virtual instances to run on the same physical hardware.

4. Rapid Elasticity:

   • Definition: Cloud resources can be quickly scaled up or down according to demand, providing flexibility and scalability.
   • Examples: Automatically increasing storage capacity or compute power during peak usage periods and scaling back during off-peak times.

5. Measured Service:

   • Definition: Cloud computing services are metered, and usage is billed based on the amount of resources consumed.
   • Examples: Pay-as-you-go pricing models, where users pay for the exact amount of compute, storage, or bandwidth used.