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What is the difference between Saas, PaaS, and IaaS in the world of cloud computing?

Difference Between SaaS and PaaS

This question was asked by an attendee at a recent Proformative Cloud Computing and SaaS event: What is the difference between SaaS and PaaS, and LaaS in the world of cloud computing?


Rob Israch
Title: Director Demand Generation
Company: NetSuite
(Director Demand Generation, NetSuite) |

SaaS (Software-as-a-Service) refers to applications that are delivered as a service over the Internet, without needing to install and run the applications at the customer's own site. A SaaS solution must be accessible via a web browser, be multitenant, have subscription-based pricing, and have automatic version upgrades, patching and security updates.

PaaS (Platform-as-a-Service) refers to the software infrastructure components needed to create and run applications over the internet. These software infrastructure components consist of operating systems, middleware, databases, and development tools delivered as a utility (similar to electricity or water) so that users only pay for what they use.

IaaS (Infrastructure-as-a-Service) consists of the physical server hardware, storage, and networking delivered as a service. Pricing is metered such that users only pay for what they use.

Anna Bielecki
Title: Chief Financial Officer / Controller/Sen..
Company: ToBe Enterprises
(Chief Financial Officer / Controller/Senior Consultant, ToBe Enterprises) |

Thanks Rob,
Finally for me the mystery is solved...

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