Cloud computing represents a significant shift from traditional computing models, where resources were typically housed on-premises. Instead, cloud computing offers scalable and flexible services over the internet. These services are generally categorized into three main types:Infrastructure as a Service (IaaS): IaaS provides virtualized computing resources over the internet. It includes servers, storage, and networking capabilities, allowing businesses to rent these resources on a pay-as-you-go basis. This model eliminates the need for investing in physical hardware, offering flexibility and scalability.Platform as a Service (PaaS): PaaS delivers a platform that allows developers to build, test, and deploy applications without worrying about the underlying infrastructure. It provides tools, libraries, and services needed to streamline the development process. Examples include Google App Engine and Microsoft Azure.Software as a Service (SaaS): SaaS offers software applications over the internet, accessible via a web browser. Users can access these applications on a subscription basis without managing or maintaining the underlying infrastructure. Common examples include Google Workspace, Salesforce, and Microsoft 365.Benefits of Cloud Computing:Cost Efficiency: Cloud computing reduces capital expenditure by eliminating the need for physical infrastructure. Companies can opt for a pay-as-you-go model, paying only for the resources they use.Scalability: Cloud services can be scaled up or down based on demand, allowing businesses to handle varying workloads efficiently.Accessibility: Cloud services are accessible from anywhere with an internet connection, enabling remote work and collaboration across geographical boundaries.Disaster Recovery: Cloud providers offer robust disaster recovery solutions, ensuring data backup and recovery in the event of a system failure.