How does Cloud Computing Work?
We’ve all heard of it – the Cloud. The term “cloud” is used as a metaphor for the internet – translating “cloud computing” to “internet-based computing”. Cloud computing relies on sharing computing resources to handle applications instead of having servers or personal devices. With the cloud, different services can be delivered to a business’s computers and devices through the internet.
Cloud computing allows a company to achieve economies of scale and better productivity. Productivity as multiple users can work on the same project or data at the same time, rather than having to wait for it to be emailed. And, time is saved as users do not need to install applications to their computer.
Different models, different names
There are typically three major cloud computing service models, known as SaaS (software as a service), PaaS (platform as a service) and IaaS (infrastructure as a service). All of these models can be offer either in a public, private, or hybrid network.
Software as a Service
SaaS can also be referred to as “on-demand software”, where users are given access to application software and databases. The cloud provider manages the infrastructure and platforms that run the applications.
Platform as a Service
With the PaaS model, the cloud provider delivers a computing platform which includes an operating system, a programming language execution environment, a database and a web server.
The application developers can then run their own software solutions on a cloud platform without having to worry about the cost and complexity of buying and managing the underlying hardware and software needed.
Infrastructure as a Service
The IaaS model of cloud computing is considered one of the most basic cloud-service models, where the provider runs the virtual machines as guests. The service provider owns the equipment and is responsible for housing, running and maintaining it.
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