I noticed a blog post published yesterday, November 2, 2016, and it looked helpful: Use JSON-LD to add Schema.org to your Website. Schema and structured data seem to be growing in importance on the Web, as we see more knowledge panels and rich snippets and product search results. I’ve been working Knowledge Panel into Site Audits. JSON-LD seems to be favored by Google in adding structured data on your web pages. See: What is JSON-LD? A Talk with Gregg Kellogg.
If you do SEO and aren’t familiar with GS1, you probably should be. They invented the use of bar codes in shopping. They also came up with GTINS (Global Trade Item Numbers) which are used online at places such as eBay and Amazon, and Google Product Search. A recent blog post by GS1 Vice President Rich Richardson is also worth reading: Why bar code numbers matter.
In February, GS1 published an extension to Schema for products. Extensions like this are how Search and SEO are growing. The Schema blog told us about it in: