Yoast explains why Schema JSON-LD is so great!

In this post, we’ll shed some light on Schema.org and JSON-LD. What is it and how can you put it to use for your website? There are many ways to let Google and other search engines know what your page is about. Next to writing awesome content, which should always be your starting point, we have also written about schema.org before. JSON-LD is a (relatively) new way to present schema.org data about your content to search engines. It comes with a few major benefits, so let’s dive in.
What is JSON-LD?
First, let’s look into what JSON-LD stands for, so we can really understand what it does.
JSON-LD, or JavaScript Object Notation for Linked Data, is a method of encoding Linked Data using JSON. (Wikipedia)
Let’s dissect that:
JSON
JSON is a lightweight data-interchange format, which is easy for humans to read and write and easy for machines to parse and generate.
LD
Linked Data is about using the internet to connect related data.
JSON-LD is a combination of both. So it’s a code snippet that tells you what price belongs to what product, or what zip code belongs to what company. Basically, instead of adding schema.org attributes to individual elements on a page,
Source: https://managewp.org/articles/13781/yoast-explains-why-schema-json-ld-is-so-great

source https://williechiu40.wordpress.com/2016/11/07/yoast-explains-why-schema-json-ld-is-so-great/