Our book, "Search Technologies and AI: Transforming Information Retrieval and Discovery," provides a comprehensive exploration of the integration of artificial intelligence with search technologies. It delves into the foundational principles of information retrieval, including search algorithms, indexing, and relevance ranking, and extends into advanced techniques such as natural language processing (NLP) and machine learning. The book discusses the implementation of distributed search systems, real-time indexing, and cloud-based solutions, emphasizing scalability and performance optimization. It highlights domain-specific applications in web search, enterprise search, e-commerce, and multimedia search. Ethical considerations such as bias, fairness, privacy, and transparency are thoroughly examined. The book concludes by exploring future trends, including voice search, conversational AI, augmented reality, and quantum computing, offering insights into the ongoing evolution of search technologies. This work serves as a crucial resource for understanding the dynamic landscape of modern search systems.