Infrastructure as a Service (IaaS) is a cloud computing service model that provides virtualized computing resources over the internet. With IaaS, users can rent and manage virtualized hardware resources such as servers, storage, networking, and even virtual machines. This allows organizations to avoid the upfront costs and complexities of buying and managing physical hardware.

IaaS offers the following benefits:

  1. Scalability: Users can easily scale up or down based on their computing needs without worrying about hardware procurement.
  2. Cost-Efficiency: Organizations pay only for the resources they use, making it a cost-effective option compared to investing in physical infrastructure.
  3. Flexibility: Users have control over the configuration and management of their virtual machines and resources.
  4. Reduced Maintenance: IaaS providers handle hardware maintenance, updates, and security, freeing users from these tasks.
  5. Quick Deployment: Users can quickly deploy new virtual machines or resources, enabling faster application development and testing.
  6. Geographic Flexibility: IaaS allows users to choose data center locations to meet compliance and latency requirements.

Common examples of IaaS providers include Amazon Web Services (AWS), Microsoft Azure, Google Cloud Platform (GCP), and IBM Cloud. These platforms offer a range of services that allow users to build and manage their own virtual infrastructure according to their specific needs.