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IAAS  

Acronym for: Infrastructure as a service

Definition: A cloud-based computing system that provides IT resources such as  servers, processing power, storage and networking on a pay-as-you-go basis.

 

PAAS

Acronym for: Platform as a Service

Definition: A cloud-based computing system where a third-party cloud service provider delivers hardware and software tools needed for application hosting and development to customers over the internet on a pay-as-you-go basis/

 

SAAS  

Acronym for: Software as a Service

Definition: A method of software delivery and licensing in which software is accessed online via a subscription, rather than bought and installed on individual computers. SAAS works much like a bank by protecting individual privacy while hosting customers on a massive scale.