Cloud Computing offers several key benefits. Firstly, it enables users to access systems through a web browser from anywhere, regardless of their location or device used. This is possible because the infrastructure is provided by a third party and accessed via the Internet. The major benefits of Cloud Computing include:
1. Organizational Agility: Cloud Computing allows organizations to quickly adapt and respond to changes in the business environment, enhancing their agility.
2. Cost Reduction: Cloud Computing offers cost-saving advantages by converting capital expenditures into operational expenditures. It eliminates the need for in-house IT infrastructure and allows users to pay for resources on a usage-based billing model.
3. Global Services: Cloud Computing provides global accessibility, allowing users to access services and resources from anywhere around the world.
4. Easier Maintenance: Cloud Computing shifts the responsibility of infrastructure maintenance to the third-party provider, reducing the burden on organizations.
5. Multitenancy: Cloud Computing utilizes a multi-tenant model, where computing resources are dynamically assigned and shared among multiple consumers. This optimizes resource utilization and efficiency.
Cloud Computing also relies on various enabling technologies, including:
1. Grid Computing: It involves the composition of a cluster of networked computers to perform large-scale tasks, acting as a virtual computer.
2. Utility Computing: This model packages computing resources, such as computation and storage, as a metered service similar to traditional public utilities like electricity.
3. Fog Computing: It extends cloud computing capabilities to the edge of the network, closer to the data source, enabling real-time processing and reducing latency.
Cloud Computing encompasses three models according to NIST (National Institute of Standards and Technology):
1. Software as a Service (SaaS): It provides online services with high-level APIs that abstract low-level infrastructure details.
2. Platform as a Service (PaaS): It allows consumers to deploy consumer-created or acquired applications using programming languages, libraries, services, and tools provided by the cloud provider.
3. Infrastructure as a Service (IaaS): It offers virtualized computing resources, such as virtual machines, storage, and networks, to consumers who have control over the deployed applications and limited control over the underlying infrastructure.
Cloud Computing exhibits five essential characteristics, which include:
1. On-demand self-service: Users can provision computing resources, such as servers and storage, as needed without requiring human interaction with the service provider.
2. Broad network access: Services and resources are accessible through various client devices, including mobile phones, tablets, laptops, and workstations.
3. Resource pooling: Computing resources are pooled and dynamically assigned to serve multiple consumers, optimizing resource utilization and efficiency.
4. Rapid elasticity: Cloud systems can scale up or down quickly to meet changing demands, allowing for flexibility and avoiding resource wastage.
5. Measured service: Resource usage is monitored, controlled, and reported, providing transparency for both the cloud provider and consumer.
In conclusion, Cloud Computing offers benefits such as organizational agility, cost reduction, global services, easier maintenance, and multitenancy. It relies on enabling technologies like grid computing, utility computing, and fog computing. Cloud Computing encompasses three models (SaaS, PaaS, and IaaS) and exhibits essential characteristics like on-demand self-service, broad network access, resource pooling, rapid elasticity, and measured service.