The provided source, a transcript from a YouTube video by IBM Technology, offers a detailed explanation of two prominent artificial intelligence (AI) concepts: Agentic AI and Retrieval Augmented Generation (RAG). The discussion addresses common misconceptions, such as the idea that Agentic AI is primarily for coding or that RAG is always the optimal way to incorporate external data, suggesting that the best approach "it depends" on the use case. The speakers explain Agentic AI as multi-agent systems that autonomously perceive, reason, and act in a loop, often acting as a "mini developer team" or handling enterprise requests. Furthermore, they elaborate on RAG as a two-phase process (offline ingestion/indexing and online retrieval/generation) used to provide agents with up-to-date, relevant external knowledge to mitigate hallucinations, emphasizing the importance of intentional data curation and context engineering for improved accuracy and cost efficiency.