Cloud computing
Cloud computing is a technology that delivers computing services over the internet, allowing users to access and manage resources such as servers, storage, databases, and applications on-demand. This model provides scalability, enabling users to adjust their resources according to their needs without investing in physical hardware. Cloud computing offers several key benefits, including cost efficiency, as users only pay for the services they use, and flexibility, with the ability to scale resources up or down quickly.
Cloud services are typically categorized into three main types: Infrastructure as a Service (IaaS), which provides virtualized computing resources; Platform as a Service (PaaS), which offers a platform for developing and deploying applications; and Software as a Service (SaaS), which delivers software applications over the internet. Additionally, cloud computing supports various deployment models such as public, private, and hybrid clouds, catering to different security and operational needs.
Overall, cloud computing enhances productivity and innovation by providing reliable, accessible, and efficient computing solutions, facilitating collaboration, and reducing the complexity of IT management.
Cloud computing services
- Infrastructure as a Service (IaaS): Provides virtualized computing resources over the internet, including servers, storage, and networking. Users can rent these resources and manage their own operating systems and applications. Examples: Amazon Web Services (AWS), Microsoft Azure.
- Platform as a Service (PaaS): Offers a platform allowing users to develop, run, and manage applications without dealing with the underlying infrastructure. This includes tools and services for application development and deployment. Examples: Google App Engine, Heroku.
- Software as a Service (SaaS): Delivers software applications over the internet on a subscription basis, eliminating the need for users to install and maintain software locally. Examples: Google Workspace, Microsoft 365.
- Public Cloud: Services are offered over the internet and shared among multiple organizations. This model is cost-effective and scalable, suitable for businesses that do not require stringent control over their data. Examples: AWS, Microsoft Azure.
- Private Cloud: Services are maintained on a private network and used exclusively by a single organization. It provides more control and security but can be more expensive. Examples: VMware, IBM Cloud.
- Hybrid Cloud: Combines public and private clouds, allowing data and applications to be shared between them. This model offers flexibility and optimization by leveraging both environments. Examples: Microsoft Azure with AWS integration.
- Community Cloud: Shared by multiple organizations with common concerns, such as security or compliance. It can be managed internally or by a third party. Examples: Government or academic institution clouds.