Iaas or infrastructure as a service is cloud computing service model which provide IT infrastructure like serers,networking,processing power,virtual machines,storage etc on rent as payper usage.Iaas allow users to choose a configuration with particular C.P.U,memory and storage and use it as pay per usage.Iaas is also called as hardware as a service.

In iaas user install its own operating system,application,reinstall operating system,configure application install on operating system.User use iaas via internet.Iaa is used as public cloud,privatecloud and hybrid cloud.

Main iaas services are amazon awm,google compute engine,microsoft azure,hp enterprise,IBM.









Advantages of iaas is low harware infrastructure as infrastructure (hardware) is provided and managed by cloud provider,user is only need to pay for its selected configuration and release after its use.To use iaas user only need less powerful computer and good internet connection.

Main disadvantage of iaas is if internet connection is weak user cannot use it and if space in virtual server is not avaiable ,user can’t ise oaas.

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