Explore the challenges of adapting Large Language Models (LLMs) for specialized domains in this 39-minute conference talk from Devoxx Greece 2024. Delve into three illuminating case studies presented by Manolis Alivizatos: discover the process of developing a RAG-based Question & Answering solution for private corporate data, learn about the transformation of Mistral-instruct into a Digital Assistant for the European Union, and examine the efficient fine-tuning techniques used to adapt Llama 2 for the Greek language. Gain valuable insights into the complexities and strategies involved in tailoring LLMs for specific applications and linguistic contexts.