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What is Cloud Computing?


Definition:


Cloud computing refers to the delivery of various computing services, such as storage, processing power, networking, databases, software, and more, over the internet. Instead of owning and maintaining physical hardware and infrastructure, users and organizations can access and utilize these resources on-demand from a remote data center provided by a cloud service provider.


Key characteristics of cloud computing include:


On-Demand Self-Service: Users can provision and manage computing resources, such as virtual machines and storage, as needed without requiring human intervention from the service provider.

Broad Network Access: Cloud services are accessible over the internet from a variety of devices, such as computers, smartphones, and tablets.

Resource Pooling: Cloud providers pool and share computing resources to serve multiple customers. Resources are dynamically allocated based on demand, optimizing utilization and efficiency.

Rapid Elasticity: Cloud services can scale up or down quickly to accommodate changing workloads or demands, providing flexibility and cost savings.

Measured Service: Usage of cloud resources is metered and users are billed based on their actual consumption, allowing for cost-effective and pay-as-you-go pricing models.


Cloud computing can be categorized into three main service models:


Infrastructure as a Service (IaaS): Provides virtualized computing resources over the internet, including virtual machines, storage, and networking components. Users have more control and can run their own operating systems and applications.

Platform as a Service (PaaS): Offers a platform and environment for developers to build, deploy, and manage applications without needing to manage the underlying infrastructure. PaaS provides tools, databases, middleware, and other development frameworks.

Software as a Service (SaaS): Delivers software applications over the internet on a subscription basis. Users can access and use software without the need for installation or maintenance.


Providers:


Popular cloud service providers include Amazon Web Services (AWS), Microsoft Azure, Google Cloud Platform (GCP), IBM Cloud, and many others. Cloud computing has revolutionized the way businesses and individuals use and manage technology, enabling greater agility, scalability, and cost efficiency.
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