Schema.org is a collaboration between Google, Bing, Yahoo and Yandex to create a common vocabulary for use in structured data markup on the web. Structured data is a standardized format for providing information about a page and its content, which can be used by search engines to better understand the content of a page and provide more accurate and relevant search results. By using schema.org markup on your web pages, you can help search engines understand the information on your page and provide more detailed and useful search results for users. The schema.org vocabulary covers a wide range of types of information, including events, products and reviews, and can be used on any type of website. Click here to go to schema.org.