In the SEO world, semantic markup is often referred to as Schema markup, or structured data markup.
You may be surprised to learn it’s not new either, but with the Hummingbird update it’s more worthy of your attention than ever. Semantic markup helps you organize data on your site in a way that allows it to be easily understood by search engines. It was launched in 2011 as a joint effort by Google, Bing and Yahoo to develop a universal set of structured data.
Semantic markup will improve search traffic by drastically improving the user experience of your website. You have probably seen semantic markup in action without even knowing it, and chances are you click on the search results with structured data more often than not.
Here is an infographic from Nine Hertz team, you will come to know that Semantic Markup is worth to your website.
