SolutionBot

To really appreciate JSON its good to understand XML and why an alternative to XML exists. XML is a powerful robust markup language that makes many things that were formerly very difficult much more feesable. One of those things is data interchange between different systems. Data interchange between different systems has always been possible, however up until recent years it has been very difficult because of the lack of a unified protocol. These days most modern languages and DBMSs have XML parsing functions that allow you to grab the data that you need and search and filter your data with Xpath.

The Publish/Subscribe model allows you to build loosely coupled applications in which an event is ‘fired’ and subscribing functions ‘respond’. This can be very powerful, if implemented correctly, and provides your application with more scalability.