Structured data is extra code on a page that labels its content in a way machines understand. To a visitor a recipe just looks like a recipe, but with structured data the page also tells a search engine this is the cook time, this is the rating, these are the ingredients. The meaning is spelled out instead of guessed.
A good analogy is the nutrition label on packaged food. The product is the same with or without it, but the label states the facts in a fixed format anyone can read at a glance. Structured data does that for your pages, following the shared vocabulary at schema.org and usually written as a small block of code inside the HTML. It helps search engines during crawling to file your content correctly.
The practical reward is rich results: star ratings, FAQ drop-downs, prices, and event dates shown directly in Google. That does not guarantee a higher ranking, but a richer listing draws more clicks. You can check which pages are eligible in tools tied to Google Search Console.
One rule is easy to miss and gets sites penalised: the markup has to describe what is actually on the page. If you mark up a five-star rating that no real reviewer left, or an FAQ that does not appear in the visible text, Google can drop your rich results or flag the site as spammy. The same vocabulary also feeds AI answer engines and voice assistants, which increasingly pull facts straight from the labelled data, so accurate markup matters in more places than just the classic blue link.
At TopDevs we add structured data to the pages where it pays off, like products, articles, and FAQs, so clients get clearer, more eye-catching search listings.
