Panos Alexopoulos is a Data and AI practitioner, author, and educator, with 20 years of industry experience across diverse domains. His expertise lies at the intersection of semantic data modeling, data quality, and development and evaluation of AI systems. Currently he works as Lead Semantic Data and AI solutions at Triply BV, in Amsterdam, Netherlands, where he helps large organizations design, develop and deploy data management and AI solutions. He is also the author of Semantic Modeling for Data (O’Reilly, 2020), a well received and highly rated book in the semantic technology and knowledge graph communities. In the last few years he has designed and delivered over 20 masterclasses, tutorials, and courses on data and AI, including a highly popular course on Knowledge Graphs and Large Language Models.