Google and Bing now both support semantic markup and structured data via JSON-LD - in fact, Google now recommends JSON-LD as the preferred method for marking up data, for both organic and paid search features. Implementing markup via JSON-LD can be a snap for a small or simple site, but when you’ve got multiple sites, hundreds of locations, or thousands of products, it can still be a slog to implement that JSON-LD statically for each page.