Because that’s Google’s preference, it’s a good idea to make sure that all structured data used within a webpage is using JSON-LD and not the JSON-LD structure. Watch the Google Webmaster ...

Google’s stated preference is for JSON-LD. It may be in your best interest to consider switching over to JSON-LD structured data if you currently use microdata.

JSON structured data can be inserted in the head as well as the body of your pages, Webmaster Trends Analyst John Mueller explained on the September 11 edition of #AskGoogleWebmasters. The question.