Cloud infrastructure refers to the collection of hardware, software, networks, and storage resources that are delivered over the internet to support computing needs. Instead of relying on local servers or personal computers, organizations use cloud infrastructure to store data, run applications, and manage services remotely. This setup offers flexibility, scalability, and cost-efficiency, as resources can be quickly adjusted to meet changing demands. Cloud infrastructure is the backbone of cloud computing, enabling businesses to access powerful IT resources without maintaining physical equipment on-site.