via yoast.com => original post link
You might have heard that you need structured data on your website. Not only will Google understand your content better, but it will also increase your chances of getting those shiny rich results. In Yoast SEO, we output Schema as a graph. This means it’s all tied together and the relationship between various elements is clear. But why is that important? Let’s have a look!
Schema is a common language to help you explain to search engines what your content is about. If you provide the right input, then a Schema tool, such as our own Yoast SEO, can output it the right way so search engines understand what you’re showing on your website. For instance, with Schema you can tell Google: this is a book, with this title, written by this author. This makes it easier for Google to comprehend web pages, rank them for the right query or even highlight them as a rich result.
But what is a Schema graph?