The word CDN is an abbreviated form of Content Delivery Network or Content Distribution Network. Providing efficiently described and easily accessible content to the end users as fast as possible is the main motto of CDN. Present internet era is of progression where advancement occurs very swiftly and so everyone wants speed. No one endures crawling download speeds and especially when there are many challengers present already. The speed of loading of any website is directly proportional to the users visiting the site and interacting with it.That’s where the real need for CDN comes.

CDN helps in accelerating the speed of any website by reducing the gap between the user of the site and the server that delivers the content. Realising the importance of this field, the industry of CDN Providers flourished. For their globally dispersed onlookers, every CDN Provider wants that they all receive the content as soon as possible. SO, they need to be brisk. The quicker, the merrier. The major portion of the Internet constituents nowadays is provided by CDN. These constituents include the applications like portals, websites, e-commerce; the objects which are downloaded like software, documents, media; social networks; objects included in web like graphics,text;live streaming communications,etc.

In addition to providing high speed surfing, CDN also facilitates the user with better content quality like videos, photos. Also, there is an enhanced security plus authenticity of the content provided. CDNs form the imperative element of any internet business game plan nowadays. It has gained much acclamation by the people associated with the online shopping sites,social networks,online media services and several other worldwide enterprises.The content owners like the media companies and the online business retailers pay the CDN operators to provide their content to their end users. There are present many CDN Providers globally like Free CDNs,Telco CDNs,and Commercial CDNs.