Cloud 101 series: How Does Cloud Computing Work?
While the thought of cloud computing may give you a headache, it is something that was made to make everyone’s life easier, especially for executives. Cloud computing means that companies do not have to purchase infrastructure or data centers thus saving a significant amount of money which they can invest in other areas of their company to make more money.
Instead they use one of three model services: Platform as a Service(PaaS), Software as a Service (SaaS), and Infrastructure as a Service (IaaS).
Software as a Service (SaaS)
The user can use applications and run them on the cloud. The applications are available through several devices and no control is given to the user regarding the infrastructure within the cloud. The applications are accessible over the internet. The provider manages access to the application, including security issues, availability, and performance.
Platform as a Service (PaaS)
With this service users do not have to install in-house hardware and software to create or operate a new application. This leaves users to concentrate on development instead of the upkeep of the application. It’s a pay for what you use service so you only pay for what you need instead of having to pay for 24/7 service.
Infrastructure as a Service (IaaS)
In this cloud service model, a cloud provider hosts the infrastructure machineries that are usually part of an in-house data center, including servers, storage and networking hardware, as well as the virtualization or hypervisor layer. It’s as close as you will get to having hardware without physically having it. With IaaS, you pay for on-demand access to compute resources, RAM memory resources, disk storage, and networking components while enjoying rapid scalability and cost efficiency.