Schema Markup
Schema markup is structured data added to a web page (using schema.org vocabulary) that labels its content so search and AI engines can understand it more precisely — for example marking up a business, a FAQ, or a review.
Schema markup is code in the background of a page that explicitly tells engines "this is a LocalBusiness", "this is an FAQ", "this is a review with a 5-star rating". It does not change what users see but makes the page far more machine-readable.
For GEO, schema is leverage: it helps engines extract your hours, services, location, and answers cleanly and attribute them to you. LocalBusiness, FAQPage, and Review schema are the most useful types for med spas and aesthetic clinics.