• Cloud computing is a technology that provides access to computing resources over the internet. These resources include servers, storage, databases, networking, software, and more. Instead of owning and maintaining physical data centers or servers, businesses and individuals can use cloud services to store and process data in remote data centers managed by cloud providers.

• Public Cloud:
  Services are delivered over the public internet and shared across multiple organizations.
  Offers scalability and cost-effectiveness but may have security concerns for sensitive data.
  Examples: AWS, Google Cloud Platform, Microsoft Azure.
• Private Cloud:
  Services are used exclusively by a single organization, either on-premises or hosted by a third-party provider.
  Provides higher security and control but may involve higher costs and maintenance.
• Hybrid Cloud:
  Combines public and private clouds, allowing data and applications to be shared between them.
  Offers greater flexibility and optimization for specific business needs.
• Community Cloud:
  Shared by several organizations with similar requirements.
  Managed internally or by a third party, offering a middle ground for security and cost.

• The creation of a virtual version of hardware, software, or network resources to improve resource utilization.
  Allows multiple virtual instances to run on a single physical machine.
• Scalability:
  The ability to scale resources up or down based on demand, ensuring performance and cost-effectiveness.
• Elasticity:
  Automatic scaling of resources to match workload changes dynamically.
• On-Demand Self-Service:
  Users can provision and manage computing resources as needed, without human intervention from the service provider.
• Resource Pooling:
  Cloud providers use a multi-tenant model to pool resources and serve multiple customers with dynamically assigned resources.
• Pay-as-You-Go Pricing:
  Users are charged based on the usage of resources, providing cost-efficiency.
• High Availability and Fault Tolerance:
  Ensures services are available even during failures, thanks to redundancy and distribution of resources.

• Cost Efficiency: Reduces capital expenditure by eliminating the need for physical hardware and data centers.
• Accessibility: Access to services and data from anywhere with an internet connection.
• Flexibility and Scalability: Easily scale resources up or down to handle varying workloads.
• Performance: Cloud providers offer fast and reliable networks with optimized hardware.
• Disaster Recovery: Built-in backup and disaster recovery solutions for business continuity.