Cloud Computing



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What is Cloud Computing?

It is a network of remote servers that are hosted on the Internet to manage, store and process data. It refers to the services that are provided by a collection of remote servers over a network. Until the 19th century, people produced their own electricity, connecting their house to windmill to run their own machines. Late in the 19th century, power plants were made to generate a huge amount of electricity in a single go and were then transmitted to every house. Now we don’t need to run the power generator of our own and we can switch the light on by just a click. Cloud computing is doing the similar things to technology or computing what power plants used to do in the 1800s.  Why do we need to keep big laptops, software, hard drives at home when all this can be kept remotely somewhere and through a wire, we only access the relevant information when we need it on our phone or iPad.

what is Cloud Computing and how to use it in business

Different Cloud Computing Models

Cloud services can be provided at different levels like at the level of platforms, applications or infrastructure. There are many Cloud services that are currently available to the public and few of them are as follows


Software-as-a-Service (SaaS)

Software-as-a-Service refers to the applications delivered through a web-rich client or any web browser to the end user. It is the largest cloud market that is growing very quickly. Few of the applications of SaaS require plugins and the rest can be run directly from a web browser without any installations or downloads required. SaaS makes it quite easy for the ventures to streamline support and maintenance and eliminates the need to install and run applications on single computers. The rest can be handled by the vendors like runtime, data, applications, virtualization, middleware, networking, storage, servers, and OSes. some popular types that SaaS offers are customer relationship management, healthcare-related applications and email and collaboration. Both large and small enterprises are implementing SaaS as their additional source of revenue to have a competitive edge over others. Examples of SaaS include DropBox, CloudNumbers and Microsoft OfficeLive.


Platform-as-a-service (PaaS)

Platform-as-a-Service provides more room for customization like for a programmer to acquire a bespoke platform (such as software, libraries, and operating system) or a framework that is mainly used to carry out a specified task such as develop or customize applications. With this technology testing, development and deployment of applications get simple, quick and cost-effective. PaaS enables a third-party provider or enterprise operations to manage servers, networking, storage, OSes and virtualization itself. Applications using PaaS inherit cloud attributes such as SaaS enablement, high-availability, scalability, multi-tenancy, and more. As PaaS automates business policy, helps migrate apps to hybrid model and reduces the amount of coding necessary, businesses benefit a lot from it. Examples of PaaS include VMforce, SalesForce, Google AppEngine and Joyent Accelerator.


Infrastructure-as-a-service (IaaS)

Infrastructure as a Service (IaaS) which is a cloud infrastructure service is a self-service model for monitoring, assessing and managing infrastructures, such as networking, storage, networking services (firewalls) and compute (bare metal or virtualized). Unlike SaaS and PaaS users, IaaS users are responsible for managing runtime, data, middleware, applications, and OSes. IaaS helps users gain infrastructure later on top of which they can install the required platform. It provides maximum control of a computer infrastructure. Examples include IBM Cloudburst, Eucalyptus Community Cloud, and Amazon EC2.


By delivering these storage, computing, and applications as a service and not a product, the cloud offers both a business and cost advantage. The cloud has accomplished what IT has always demanded without having to shift to a new infrastructure. Some more examples of cloud computing are Dashlane, Google App Engine, Amazon Web Services, Google Docs, Google Calendar, online backup, Microsoft OneDrive, Windows Azure, Oracle public cloud, Owncloud and many more.

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