What is JSON-LD and why does it matter for SEO?
JSON-LD (JavaScript Object Notation for Linked Data) is Google's preferred format for structured data markup. It describes entities on your page — people, organizations, products, articles — and their relationships in a machine-readable way. In 2026, Google's AI Overviews and Knowledge Panels rely heavily on entity graphs built from JSON-LD to understand page authority and topical relevance. Pages with rich, correctly-linked structured data are significantly more likely to appear in featured snippets, rich results, and AI-generated summaries.