What it is and why you need it?
Structured data is a standardized format for labeling text and webpage elements (images, videos etc..) so that they can qualify for appearing as rich snippets in search engines visually enhanced search queries results pages way beyond the standard blue links. It isn’t a direct ranking factor but significantly improves web traffic in search, images, videos and news.
The structured data is implemented by adding specific JSON-LD code snippets called “markup’ that is usually placed in the <head> or section of a webpage HTML to describe various webpage elements using the open source Schema.org universal vocabulary like; Product, Recipe, LocalBusiness, Author or Article)