Due to the flexibility, scalability, affordability, pay as you go facility and self service capacity Cloud Computing has become very much popular to individuals, small, medium and large scale businesses in the past few years. There are so many nick names of this like Cloud, Cloud Server, Cloud Hosting etc. But in most of the cases people are not aware about what actually cloud computing is? And how does it work? Cloud Computing is simply a much of physical servers acting like one big server where data can be shared or pulled on demand from any corner of the world. It means, you do not have to be dependable upon one single server or storage to store you data. Internet is the most common way for communication. So Cloud Computing shares the resources, data and software throughout internet to all over the world. The main resources provided by Cloud Computing are Storage, Network, Servers and most importantly different platforms.
As this term becomes popular day by day, different cloud platforms are being created by different companies. For example: IBM Cloud, Amazon AWS/EC2, Rackspace, DevOps, etc. People and organizations use these platforms for any kind of Cloud Integration.
Cloud Computing has three main models – SaaS (Software as a Service), PaaS (Platform as a Service) and IaaS (Infrastructure as a Service). Let’s discuss about them in brief:
SaaS (Software as a Service):
It is the most used cloud computing model among all. The Organizations and developers use SaaS to integrate the third party applications; so that the end user is free to use the application and data anytime from anywhere. SaaS is deployed to the network, so to use the application the end user needs internet connection and he/she needs to open it through browser or program interface. Some Examples of SaaS Integration are: Salesforce, Netsuite, Zoho etc.
PaaS (Platform as a Service):
This model of cloud computing is developed specifically for software development. PaaS Provides Developing tools which are hosted on the cloud and can be used through internet. In this environment, the developers have the complete leverage to create and host application in the cloud through internet. The biggest facility of this model is that the developers do not have be worried about the server hardware while developing and application. Microsoft Azure and Google App Engine are the perfect example of PaaS.
IaaS (Infrastructure as a Service):
This form of Cloud Computing provides the users with storages, virtual servers, networks and system software to give you the complete functionality of a data center. You can easily be able to use the operating system and the applications containing resources like storage, servers, virtualization layers and networks. Go Grid, Rackspace, Amazon Web Service (AWS) are the examples of IaaS.
There are three main types of Cloud computing services such as: Private Cloud, Public Cloud and Hybrid Cloud. These are used based on demand. So it is seen that Cloud Computing has changed the entire concept of data storage. As the technology is growing in a rapid speed, there are tons of new things yet to come in the near future.