The text discusses the transformative shift from traditional keyword-based search to vector search, which captures semantic meaning and context through high-dimensional embeddings, significantly enhancing how users interact with information. Vector search, unlike keyword search, enables systems to grasp intent and deliver relevant insights instantly, crucial for agentic applications that rely on understanding and reasoning. The text highlights various business applications, such as telecom, customer support, fraud detection, healthcare, and retail, demonstrating how vector search enables real-time anomaly detection, improved customer service, and effective decision-making. A case study on telecom showcases the use of vector search for rapid anomaly detection in packet capture (PCAP) data, illustrating how Couchbase's Full Text Search and Eventing functionalities support this paradigm shift. The narrative underscores the importance of vector search as the backbone of intelligent systems, allowing them to recall, reason, and act autonomously, thus setting the stage for the next era of agentic applications.