There’s no doubt that you’ve heard the buzz around ‘cloud computing’, but it seems that words like ‘public, private and hybrid’ are thrown around often without explanations about what they really are and how they differ from each other. So let’s try to debunk some of the fluff.
What’s Public Cloud?
Public cloud is owned by a third party service provider that shares its’ cloud resources with the public. It is a shared resource for all users and they pay per usage. Customers often benefit from economies of scale because infrastructure costs are spread across all users, allowing for the customer to pay based on their usage.
On a public cloud, the infrastructure and security protection are managed and supported by the service provider, but as a business you still need to find out from your provider about the security of your data and the locations of the data centres.
What About Private cloud?
Private cloud (also called internal cloud) are those that are built specifically for a company or enterprise. It allows the companies to place applications and data into the cloud whilst maintaining greater control of the information. Private cloud can come in the form of on premise and externally hosted.
On-premise private cloud is when the organisation hosts its’ own data centre. Whereas, externally hosted cloud is when the cloud model is hosted by an external cloud provider that has an exclusive environment for that user which is not shared with any other user. Public cloud is very simple to procure, all that is needed is a good internet connection whereas creating a private cloud system requires professional work to virtualise the existing environment.
Hybrid Cloud: Best of Both Worlds?
Hybrid cloud is a bit of a give-away, yes you you’re right. It combines the best of public and private cloud. This is becoming a more commonly used solution as companies customise the cloud for their needs. With hybrid cloud it is possible to maintain control and security over data while also allowing for higher volume use by adding on additional capacity.
Hybrid cloud models using both private, dedicated IT resources and public variable infrastructure are often less expensive for clients than either private or public cloud solution, however this is not always the case. Depending on the needs of the business the cost of each type of cloud may vary. That’s why we believe that each organisation should evaluate its own business requirements to determine what is best for them.