What is Schema Markup in SEO? A Simple Guide for Better Search Results

Schema Markup has evolved from an optional “rich snippet” generator into a critical data layer for Generative Engine Optimisation (GEO). While it still powers visual features in Search, its primary role today is providing a machine-readable “source of truth” for AI models like Google’s Gemini and OpenAI’s SearchGPT.

Schema markup is a standardised vocabulary from that you embed in a webpage to describe entities such as organisations, products, articles, and local businesses in a machine‑readable format for search engines. Structured data is any organised, consistently formatted data that follows a defined schema so that search engines can reliably interpret and use it.

JSON‑LD (JavaScript Object Notation for Linked Data) is a lightweight, script‑based format for implementing structured data inside