Traditional AI chatbots often struggle with domain-specific knowledge and generating accurate, context-rich responses. Retrieval-Augmented Generation (RAG) architecture offers a powerful solution, combining the strengths of large language models with external, up-to-date knowledge bases. This article delves into building robust AI customer support platforms using RAG, covering its core components, architectural phases, and key benefits for businesses aiming to revolutionise their customer experience in markets like India.