The migration of BI technologies is driven by cost-saving, consolidation of tools, and a shift to modern solutions due to a lack of expertise in older systems. Power BI and #tableau lead the trend, with many Tableau workspaces transitioning to #powerbi. Legacy systems like #sap #businessobjects, #oracle Analytics, #cognos, #microstrategy, and #qlik are also part of these migration projects, though the full reasons behind this mass movement are not yet completely clear.