What is cloud computing

Cloud computing refers to any kind of hosted service delivered over the internet. These services often include servers, databases, software, networks, analytics and other computing functions that can be operated through the cloud.

Rather than owning their own computing infrastructure or data centres, companies can rent access to anything from applications to storage from a cloud service provider.

One benefit of using cloud-computing services is that firms can avoid the upfront cost and complexity of owning and maintaining their own IT infrastructure, and instead simply pay for what they use, when they use it.

Types of cloud computing

There are three distinct deployment models for the cloud: private, public, and hybrid. Ultimately, all three models will grant users anytime, anywhere access to the files and applications that drive their business. The difference lies in how they do it. The type of cloud that you should deploy for your business depends on several factors, such as what you are using your cloud environment for, regulations that dictate how data can be stored and transmitted, and other considerations.

 Public cloud Services and infrastructure are owned and operated by a third-party cloud service provider and made available to the public over the internet.

 Private cloud Services and infrastructure are operated solely for a single organization and are not made available to the public.

 Hybrid cloud A combination of both public and private clouds, connected by technology that allows data and applications to move between them.

Everything as a Service

There are several layers that make up the cloud “stack”. A stack refers to the combination of frameworks, tools, and other components that make up cloud computing’s under-the-hood infrastructure. This includes Infrastructure as a Service IaaS, Platform as a Service PaaS, and Software as a Service SaaS modules. These services provide customers with varying levels of control and responsibility in their cloud environment.

Infrastructure as a Service

With IaaS, the customer is responsible for managing everything from the OS and middleware, to the data and applications. The service provider handles other tasks, such as virtualization, servers, storage and networking responsibilities. Customers are charged based on the amount of resources they use, like CPU cycles, memory, bandwidth and more. Examples of IaaS products include Amazon Web Services and Microsoft Azure.

Platform as a Service

PaaS solutions provide customers with a place to develop, test and host their own applications. The customer is responsible for managing their own data and software, and the service provider handles everything else. With PaaS solutions, you don’t have to worry about software updates, operating systems, or storage needs. PaaS customers pay for whichever computing resources they consume. Examples of PaaS solutions include Google App Engine or SAP Cloud.

Software as a Service

In the SaaS model, customers purchase licenses to use an application hosted by the provider. Unlike IaaS and PaaS models, customers typically purchase annual or monthly subscriptions per user, rather than how much of a particular computing resource they consumed. Some examples of popular SaaS solutions would be Microsoft 365, Dropbox, and DocuSign.

SaaS solutions are great for small businesses that lack the financial and/or IT resources to deploy the latest and greatest solutions. Not only do you skirt the costs and labor concerns that come with deploying your own hardware, but you also don’t have to worry about the high upfront costs of software. Plenty of large businesses have also enjoyed the flexibility and agility afforded by SaaS solutions.


In conclusion, cloud computing has revolutionized the way businesses and individuals access and store data. The ability to store and access information from any location at any time has greatly improved efficiency and productivity. Additionally, cloud computing has significantly reduced costs for businesses by eliminating the need for expensive hardware and maintenance. However, it is important to carefully consider the security and privacy risks associated with storing data in the cloud, and to choose a reputable provider with robust security measures in place. Overall, cloud computing has proven to be a valuable tool for businesses and individuals alike, and it is likely that its use will continue to expand in the future