By the word Cloud computing if you imagine gaseous cotton like cloud present on your computers then hold your horses, Cloud computing a digital server or third party infrastructure that allows the huge number of data storage, and providing on demand services be it networking, server, networking or data processing.

Why Cloud Computing?

Creating your own data servers and control their maintenance is a bit hectic. Often they require 24/7 maintenance services, server down could cause a lot of data loss or its availability could be affected and also they require physical environment like a centered position, air conditioned room as they heat up.

Cloud computing provides access to an IT infrastructure where companies can rent services like storing and retrieving data, distributing computing and data communication. It is not limited to any specific feature rather it provides you with on pay services .e.g., pay and get the accurate, scalable and reliable services you want.

It is economically good as it provides more reliable services in upfront cost and benefiting a wider range of consumers. You don’t need to be near a computer for your required services as it could be delivered by the cloud.

Types of Cloud Computing:

As for the On-pay services, Cloud Computing provides three types of services:

      Infrastructure as a Service (IaaS)

      Platform as a Service (PaaS)

      Software as a Service (SaaS)

Let’s discuss them in detail:

      Infrastructure as a Service (IaaS):

It is an on paid supplier that gives strategy based services according to their policies.They are in charge of storing, working and keeping up the hardware it accommodates to its customer. Customers pay according to their need or utility processing premise. Attributes of IaaS include:

• Mechanized regulatory process
• Internet connectivity
• Dynamic scaling
• Virtualization as per platforms
• Web network

IaaS is additionally portrayed as one of three primary classifications of distributed computing administration. The typical examples are Amazon Web Services (AWS), Cisco Metapod, Microsoft Azure, and Google Compute Engine (GCE).

      Platform as a Service (PaaS)

It provides scalability according to the rented platform and deliversvirtualized services for existing as well as to develop, design, test or deploy the new application via internet connection. The stack might be a lot of parts or programming subsystems need to build up a completely practical, well-functioning item or administration, for example, a mobile application that uses a database, OS, a server, and programming language. All the more conventionally, the solution stack may convey as a middleware in this process.

It is evolved from the SaaS and particularly consists of 5 layers of cloud computing. The layers are divided as upper (the first two) and lower layers (rest of the points):

• Client layer including hardware and software
• The application layer
• The Paas
• The Infrastructure as a Service (IaaS)
• The Server layer

The common examples are Google App Engine, Apache Stratos and Windows Azure.

      Software as a Service (SaaS)

The typical and mature type of cloud computing allows cloud applications to take advantage of software architectures. It helps in reducing the cost of maintainability, scalability and maintenance of the servers. It is most commonly used in business platforms, for example, document management, Customer relationship management (CRM), accounting, service desk management, human resource (HR), content management and uses.

The common examples are:

Google Apps, SalesforceMailChimp, DocuSign, Slack, and Dropbox,

Uses of Cloud Computing

• Education –Unlike the old education system where students go through various thick library books, modern education requires the use of IT especially the use of the internet. Students can learn anything from anywhere in the world by just typing some words. IT has opened the doors for the online education system via internet or mobile applications.
• The internet is full of tutorials and educational material for the students all around the globe. Cloud computing offers a Virtual Infrastructure solution (VDI) which allows the students and instructors to get data on multiple devices
• Health care –In a hospital several organizational layers like doctors, nurses, patients and admins need to communicate and share information with one another from anywhere ASAP. Cloud computing provides multi data copy backup redundancy which helps in data management and its maintenance along with providing security.
• One of the best known and frequently demanded feature of cloud computing is it solved the big data problem. With the increasing use of technology, it is becoming difficult to manage large stacks of data including your social media messages, images, documents, personal data and many more. Cloud computing provides scalable data management and solving problems that could occur due to the heaps of data turns it into more available, accessible and with some mathematical statistical techniques, this data could be turned into valuable information.
• Nowadays, large organizations follow the customer buying patterns and analyze their market need and demands, what they prefer and what they don’t, what kind of products they often buy what they don’t. Cloud computing enables business enterprises to use both structured and unstructured type of data.
• There are several cloud based applications with good learnability, usability, stability, portability along with data integrity and availability. In these application cloud based and local applications work together. The common examples are Apple iCloud, DigitalOcean, and Microsoft Online.