What is JSON?
JSON was popularized by Douglas Crockford and it has been an open standard since 2005. JSON is most commonly used on the internet with web browsers, scripts, and AJAX requests. JSON has also been used with Node.js, Microsoft Excel, Apache Cassandra, CouchDB, MongoDB, Oracle Database, MySQL Database, etc.
One of the major differences between JSON and XML is that JSON cannot contain semantics equivalent to declarations or type information, but this makes it much easier to process. It was designed to be easy for machines to parse and generate.