Both JSON-LD and Microdata are methods of adding structured data to a website. However, JSON-LD offers several advantages over Microdata. Firstly, JSON-LD is easier for humans to read and write, whereas Microdata can be difficult to understand. Secondly, JSON-LD is more flexible, as it can define more complex data structures. Finally, JSON-LD can define data outside of the HTML code, making it easier to maintain and update. Overall, while both formats serve the same purpose, JSON-LD is generally considered to be the better choice due to its flexibility and ease of use.