After 2005 applications & user requirements started growing rapidly, Hardware and software developed, the advent of Single Page Applications and modern mobile/web apps that we know today needed some kind of data interchange to function seamlessly. To fulfill user requirement technology started shifting into new language-independent data interchange format that time JSON came into the Picture. JSON gained rapid popularity because it makes transferring data very easy. It’s also lightweight and easy to read and understand. There are few other reasons that JSON make buzzword after 2005. Flexibility for rapid application development requirement APIs (application programming interfaces) Modern Web & Mobile Applications. Need of faster data travelling on various kind of devices. Big Data and variety in data.