Infrastructure as a Service (IaaS)
IaaS is a cloud service represented by instant computing infrastructure linked and managed over the Internet. It provides users with access to different virtual resources such as computers (virtual/dedicated hardware), servers, networks, and data storage space.
IaaS helps to avoid any unnecessary expenses of buying and managing your hardware. Each resource of IaaS is offered as a separate service component, so the user pays only for resources he needs to use. It also allows users to manage, install, and configure their software.