In this session, we will explore the emergence of Self-Service BI models and how they bridge the gap between Business and IT. We will discuss the division of responsibilities, with IT/BI ensuring data quality and security, while Business focuses on validating concepts and creating reports. The session will highlight the importance of a user-friendly semantic layer, will cover best practices for naming conventions, performance optimization, and ensuring data behaves as expected. Join us to learn how to create a semantic layer that is not only efficient but also Copilot Ready!