Retrieval Augmented Generation (RAG) is a method that enhances the capabilities of Large Language Models (LLMs) by integrating external knowledge into the prompt, allowing LLMs to generate more accurate and insightful responses. RAG addresses the limitations of LLMs, which can only respond based on their training data, by providing up-to-date and organization-specific information through a dynamic retrieval process. The RAG pipeline involves stages like data indexing, where data is loaded, split, and stored as embeddings, and data retrieval and generation, where user queries are converted to embeddings and relevant information is retrieved and used to generate responses. Advanced techniques such as dynamic query refinement, reranking, hybrid retrieval strategies, and the use of knowledge graphs further enhance RAG systems by improving query relevance, retrieval quality, and response accuracy. Additionally, RAG can work with both unstructured text and structured data sources, and maintaining real-time vector database updates is crucial for providing the most current information. The agentic RAG approach employs specialized roles within the system to improve the reliability and precision of results, while tools like LaunchDarkly feature flags and AI Configs allow for safe experimentation and personalization of RAG applications, enabling easier management and optimization of LLM responses.