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IaaS and PaaS offering

Virtualized data centers brought you infrastructure as a service (IaaS) and platform as
a service (PaaS) offerings

IaaS offering provide you with raw compute,storage and network, organized familiar to you from physical and virtualized data centers.

PaaS offerings,  bind your code to libraries that provide access to the infrastructure your application needs, thus allow you to focus on your application logic.

In the IaaS model, you pay for what you allocate. In the PaaS model, you pay for what
you use.

As cloud computing has evolved, the momentum has shifted toward managed infrastructure and managed services.

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