LangSync is an agency specialising in Large Language Model (LLM) and Answer Engine Optimization (AEO) that helps brands become discoverable, citable and trusted across AI-powered platforms such as ChatGPT, Claude, Gemini, Perplexity and Bing Copilot. It achieves this by restructuring content into AI-native formats, deploying rich schema (JSON-LD, entity markup), and aligning site architecture for vector search and AI retrieval.