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Infrastructure as a Service (IaaS)

Definition - What does Infrastructure as a Service (IaaS) mean?

Infrastructure as a service (IaaS) is a service model that delivers computer infrastructure on an outsourced basis to support enterprise operations. Typically, IaaS provides hardware, storage, servers and data center space or network components; it may also include software.

Infrastructure as a service (IaaS) is also known as hardware as a service (HaaS).

Techopedia explains Infrastructure as a Service (IaaS)

An IaaS provider provides policy-based services and is responsible for housing, operating and maintaining the equipment it provides for a client. Clients usually pay on a per-use or utility computing basis.

Characteristics of IaaS include:

  • Automated administrative tasks
  • Dynamic scaling
  • Platform virtualization
  • Internet connectivity

IaaS is also described as one of three main categories of cloud computing service. The other two are software as a service (SaaS) and platform as a service (PaaS).

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