Google has clarified in its search developer documents that JSON-LD, Microdata and RDFa are all fully supported forms for structured data and Google Search. Google wrote, "all three supported formats ...

JSON-LD extends JSON to include linking information. Here's how it could make JSON a top-tier player in hypermedia and the semantic web. JSON-LD looks to unite the promise of self-describing ...

Google updated the structured data guidance to better emphasize that all three structured data formats are acceptable to Google and also explain why JSON-LD is is recommended. The updated Search ...