Product schema markup is a type of structured data that provides search engines with detailed information about your products, such as price, availability, reviews, and ratings. This information is then displayed in rich snippets on search engine results pages, making your listings more visually appealing and informative to potential customers. Mastering product schema markup is crucial for eCommerce SEO as it can significantly boost click-through rates for your online shop. By implementing product schema markup correctly, you can enhance your search listings with eye-catching features like star ratings and price information, which can help your products stand out from competitors and attract more clicks from potential customers.