IaaS vs. PaaS vs. SaaS

The “as-a-service” models are typical of the second wave of the Web 2.0, built on top of cloud computing. Indeed, these models‘ basic premise is to offer a solution to the final customer without having to host it on-premise, with complex implementations and large overhead. Yet while PaaS and IaaS are skewed toward development teams. SaaS has wider applications toward end-users, also in non-technical departments.

Infrastructure as a service (IaaS)



[image error]IaaS stands for infrastructure as a service. Together with other “as-a-service” models, the basic premise of this model is to offer a solution to the final customer without having to host it on-premise, with complex implementations and large overhead. The IaaS model provides virtualization, storage, network, and servers where the final user/customer will handle applications, data, operating systems, and run times.

Read Also: IaaS Business Model

Platform as a service (PaaS)



[image error]PaaS stands for the platform as a service. Together with other “as-a-service” models, this model’s basic premise is to offer a solution to the final customer without having to host it on-premise, with complex implementations and large overhead. The PaaS model is a form of evolved cloud computing. The provider, together with virtualization, storage, network, and servers, provides middleware and runtime to the user/customer, which only handles data and applications.

Read Also: PaaS Business Model

Software as a service (SaaS)



[image error]In the SaaS model, the provider also makes the applications available to the final user on top of the cloud. The applications and data are hosted and maintained with the third-party SaaS provider, enabling the user/customer to have a quick and easy setup and no overhead.

Read Also: What Is SaaS

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