How to Pump Your SEO by Using Schema Markup - Schema.org

Schema markup is code (semantic vocabulary) that you put on your website to help the search engines return more informative results for users. If you’ve ever used rich snippets, you’ll understand exactly what schema markup is all about.

One of the latest evolutions in SEO is called schema markup. This new form of optimization is one of the most powerful, but least-utilized forms of SEO available today. Once you grasp the concept and method of schema markup, you can boost your website in the search engine result pages (SERPs).

For More Info: https://blog.kissmetrics.com/get-started-using-schema/