Infrastructure as a Service (IaaS) is a cloud computing model that provides virtualized computing resources over the Internet. IaaS offers fundamental infrastructure components such as virtual machines, storage, servers, and networking, allowing organizations to rent these resources on a pay-as-you-go basis. This model eliminates the need for physical hardware management, enabling businesses to scale their IT infrastructure quickly and efficiently according to their needs. IaaS provides flexibility, cost savings, and the ability to rapidly deploy and manage applications and services, making it ideal for businesses seeking to optimize their IT operations and respond swiftly to changing demands.