JSON stand for (JavaScript Object Notation) it is an open standard data exchange format based on a JavaScript syntax subset and it is text-based, lightweight, and generally considered easily readable/writeable. JSON uses the conventions similar to other languages likes C, C++, Java, Perl and Python for making JSON an ideal data-exchange language. JSON is used by some over XML as a data exchange format because it is less verbose, works quickly, reduces data size and simplifies document processing. It is used extensively in web development, especially because it seamlessly transfers information between potentially incompatible technologies. For example, it could involve a Java application running on a UNIX box or a C# application running on Windows.