Explore the rapidly evolving field of information retrieval and its intersection with generative AI in this keynote address from Haystack EU 2024. Delve into the changing landscape of search technology as Trey Grainger, lead author of "AI-Powered Search," examines how traditional search engines are transforming into vector databases and vice versa. Gain insights into emerging concepts such as RAG, bi-encoders, cross-encoders, multimodal search, and hybrid search. Compare these new techniques with established methods like learning to rank, lexical search, and collaborative filtering. Discover how the search toolbox and terminology are expanding, and get a glimpse into the future of search and AI. Learn from Grainger's extensive experience in the field, including his roles at Searchkernel, Presearch, and Lucidworks, as he provides a comprehensive survey of the evolving search and relevance landscape.