Helping engines understand your content.
WHAT IT IS
Markup added to your pages describing what the content is: a product, an article, a business, an event, a recipe.
WHAT IT DOES
Enables enhanced search results: star ratings, prices, availability, event dates, images.
These affect click-through more than position, which is still valuable.
COMMON TYPES
Organisation or LocalBusiness, for your business details Product, for shop items Article, for content FAQ, for question-and-answer content BreadcrumbList, for navigation
HOW TO ADD IT
Most SEO plugins and ecommerce platforms output it automatically. Check it is working rather than assuming.
WooCommerce outputs product markup, though some themes break it.
TESTING
Use a structured data testing tool on your pages. It reports what was detected and any errors.
WHAT NOT TO DO
Mark up content that is not on the page. Engines treat this as deceptive and may apply a penalty. Mark up reviews you invented.
THE REALISTIC BENEFIT
Better-looking results, more clicks. Not a ranking boost by itself.