One of the best ways to improve your website's search results and ranking is to add structured data. Structured data provides detailed lists of information about your site to search engines. These details often have additional information which can show up in your search results and improve your site's ranking. Structured data may also get Google to add rich results to your site's search results. Rich results are things like breadcrumbs, images, maps, FAQ page and other visual elements.
JavaScript Object Notation (JSON) is an open-standard data format or interchange for semi-structured data. It is text-based and can be read by humans and machines. Since JSON is text-only, it can easily be sent to and from a server and used by any programming language. And since JavaScript has a built-in converter, its data can be used like any other JavaScript object.