In a previous post, we defined the different service models offered by cloud technology: Infrastructure as a Service (IaaS), Platform as a Service (Paas) and Software as a Service (SaaS). Today, we will take a deeper look at the IaaS model of cloud computing.
As the name suggests, Infrastructure as a Service is a computing infrastructure that is fully outsourced to a provider. It is the most basic of the three aforementioned models. In the IaaS model, the provider handles all the equipment and hardware used to maintain an infrastructure, such as the servers and operating systems necessary to run elements of the other types of service (e.g. databases and web servers on PaaS and various applications on the SaaS).
Many businesses are moving toward the IaaS model, because it frees them from worrying about basic computing needs while still retaining control of their software and data. Instead of designing and managing their own servers (which can be wildly expensive and time-consuming), companies can hand over the reins to an outside entity. Below are a few of the benefits businesses have found when employing an IaaS provider.
- Reduced cost: For most businesses, money is a driving force for many of their decisions. Like other cloud services, the IaaS model is usually operated on a pay-as-you-go basis, which allows for a huge cost decrease, since companies only have to pay for what they actually use.
- Scalability: One of the big benefits of the cloud is that it is scalable. Since your infrastructure is hosted on this model, your service provider can scale your services up and down based on your company’s current needs.
- Customization: IaaS allows for a high level of customization. As a client, you can just tell a provider what services, software and applications you want to access from your devices. Just about any service you desire can be virtualized and placed on your infrastructure.
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