What Does JSON-LD Mean?
JavaScript Object Notation – Linked Data or JSON-LD is an extension of the JavaScript Object Notation resource aimed at helping information networks to acquire links data. JSON-LD allows for data to be organized according to the traditional JSON concept. JSON-LD is an RDF working group standard and a semantic Web concept.
Techopedia Explains JSON-LD
The essential role of JSON-LD is allowing networked information sets to move beyond the ordered pair system that was conventional before linked data played a role. By allowing these information networks to accumulate additional link data from hyperlinks, JSON-LD enhances what users are able to do in data collection, without enforcing a lot of proprietary syntax or forcing developers into a particular format.