This workshop provides a comprehensive approach to building Conversational AI products in the generative AI era. Participants will explore the trade-offs between NLU and LLM approaches and learn how to identify their specific technology needs. Through hands-on design exercises and interactive discussions, attendees will gain a deeper understanding of the strengths and weaknesses of each approach. Ultimately, participants will leave the session a framework to choose the most effective technology or combination of technology for their use case. This class is ideal for Product Managers, Developers, and Designers looking to enhance their products with cutting-edge Conversational AI.