ABSTRACT
Massive data centers and server farms comprise the Cloud's underlying infrastructure on which Software-as-a-Service and Platform-as-a-Service run. It is an emerging computing paradigm where data and services reside in massively scalable data centers and can be ubiquitously accessed from any connected devices over the Internet. To help understand the Infrastructure-as-a-Service (IaaS) delivery model, the following sections examine some of its key characteristics, including dynamic scaling, agreed-upon service levels, renting, licensing, metering and self-service. IaaS providers maintain the equipment, while users rent or buy the specific services that they need. Organizations use the IaaS Cloud as a way of easily scaling new or existing applications to larger audiences. Designing a custom architecture for customer's mission-critical applications and workloads might seem complex, but it has solution specialists who can help customers every step of the way.
