Discover the concept of query folding in Power Query and its critical role in performance optimization. Learn why query folding is essential and explore factors that can hinder its occurrence. This 21-minute conference talk, presented by Chris Webb, a member of the Power BI Customer Advisory Team at Microsoft, delves into the intricacies of query folding. Gain valuable insights into Azure, Power BI, Excel, optimization techniques, and data visualization and modeling. Access additional resources, including the speaker's blog at https://blog.crossjoin.co.uk/, to further enhance your understanding of this important topic in data management and analysis.