Schema.org: It is a joint effort by Google, Microsoft, Yahoo, and Yandex to create a common set of schemas for structured data. It's the most widely used format for rich snippets and is supported by all major search engines.
Once you've decided on a format, you'll need to add the structured data to your web pages. This can be done using HTML tags, microdata, or RDFa.
HTML tags are the easiest way to add structured data to a web page. All you need to do is add a few extra tags to your existing HTML code. Microdata is a slightly more complex option, but it's still relatively easy to use. RDFa is the most complex option, but it offers the most control over how your structured data is displayed.
Once you've added the structured data to your web pages, you'll need to test it to make sure it's working properly. Google offers a free testing tool that will let you know if your structured data is valid and if it's being displayed correctly in search results.
Request Form