What is Hybrid Cloud? Definition , advantages and benefits
According to a survey conducted by Tech Pro Research, 68% of people using Internet know what a Hybrid Cloud is. However, the sample size was just 138 and constituted people interested in Information Technology field. I am not inclined to agree that 65% of IT people understand hybrid clouds, because most of them are yet to understand all the concepts and facts of cloud computing (when we consider IT people all from over the world). In many countries, business houses do not go for cloud computing due to one or more reasons. One of the primary reasons is the lack of trust in public clouds.
Probably, individuals in such countries understand cloud computing and use it too (OneDrive, Google Drive, etc.). But Amazon, Azure, etc. find almost no subscribers from such countries. Reason? Lack of proper understanding of cloud computing concepts and again, fear of data being stolen and loss of data.
What is Hybrid Cloud
There are public clouds and there are private clouds. In between the two, lies Hybrid cloud.
OneDrive, Google Drive etc. are public clouds where people share same servers. The specialty of cloud is that it can increase and decrease the service as and when needed. Same applies to Azure, Amazon and Ubuntu clouds. You will agree that OneDrive and Google Drive (and similar storage services like Mozy) etc. are more popular as they fit for both business houses and individuals. My entire Office is stored on OneDrive. I am using it since the time Microsoft was offering a whopping 25GB for free under the SkyDrive name. Thus, I can access it from any part of the world.
Anyway, coming back to what is Hybrid Cloud, we have to first understand public and private clouds. The clouds that you see in the form of OneDrive, Google Drive, Canonical etc. are most popular public clouds. They are called public because data is stored on same servers irrespective of where the person lives or what he or she is storing. There are concerns if the service provider can look into the data being stored (which is again a deterrent for cloud usage).
In other words,
The cloud service can be used by anyone simply by signing up for the service
The cloud service can be expanded and reduced simply by changing plans
Space occupied is provided and released in real time on the clouds
There is no or minimal manual intervention
Unless otherwise stated in T&C, the cloud service provider cannot look into the data being stored by the users. If he does, it will be categorized as breach of trust.
However, looking at the last point, government rules can coerce the cloud provider to provide data about a client to the federal agencies or others related to it – without the knowledge of the user. Thus, the breach of data factor is not feasible to implement.
Private clouds are safer when it comes to storing data. Please note that I’ve been using storage of data as an example as it is easier to understand. Cloud computing, as such, can be anything from storage of data to providing a platform as a service where users can not only create their programs, but test them under different conditions.
But implementing a private cloud is a complicated process. You’ll need additional servers and that is just the beginning. You need IT admins who understand concepts and features of cloud. Then you would need programmers who can create and maintain software where human interference in negligible. Then, the cloud should be made accessible to all the branches of the organization. Finally, you have to take care of hackers etc. and make the cloud as hacker-proof as possible.
To avoid all this complications, organizations tend to use hybrid clouds. That is, some of the processes of the organization run on the private cloud while others run on complicated clouds such as Azure.
Hybrid Cloud definition
There is no solid definition for hybrid cloud. Actually, there is no solid definition for cloud computing. There are different explanations that talk about criteria of cloud computing. And these criteria too vary based upon the perspectives of users. Anyway, I will try to define hybrid cloud as following:
“Any cloud computing service that employs use of both public and private clouds is known as hybrid cloud”.
Further, the question arises as to why Hybrid cloud. We talked about private cloud above and found that it is very complicated. A hybrid cloud runs simple processes on own private cloud and uses public clouds for complicated processes. That way, you cut down on not only expenses but also upon different complications that may hinder or delay your business processes.
While you can build a private cloud (for use with Hybrid cloud) on your own, many companies (such as IBM) provide their own engineers to streamline your private cloud with the public cloud. That again, saves on expenses while relieving you from hunting for proper know-how to set up your private cloud that is used in conjunction with any public cloud.
To sum up:
Hybrid clouds use both private and public clouds
Hybrid clouds employ an on-premise cloud which is used with public clouds to avoid heavy expenses on programming and maintenance
Hybrid clouds offer better, reliable safety to data and processes as the complicated data is processed on safe public clouds (though many people are still skeptical about this aspect)
The only problem with clouds is that the legal rules vary across countries. In the case of cloud computing, if any dispute arises, the rules of the area where the service providers registered their service, apply. This is why Microsoft stresses on the universalization of legal rules and regulations across the globe. It would make it easier for both service providers and clients if that is achieved.
Benefits and advantages of Hybrid Clouds
On premise infrastructure
No latency due to internet traffic
Faster processing time as some data is processed locally and thus you save time when compared to all data processed on cloud. You have to upload data and download results. It takes time
Complicated processes run on public cloud so saves expenses and management of infrastructure
You can use a private cloud all the year and extend your public cloud usage as and when required, instead of building or extending on-premises infrastructure.