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* This a Data Celi event and you MUST register and pay 250 Euro on https://www.dataceili.ie/precons to attend

Data Celi is a community run event for the Irish Microsoft Data Platform. *

Congratulations! You've built your shiny fancy Power BI report and your charts look terrific. But, your data refresh takes forever...Or, your report is utterly slow when interacting with visuals...You switch to DirectQuery mode to make things better, just to discover that the report performance sucks even more... ​ And, if you feel lost, I don't blame you - I've also been there! ​ That's why this workshop is for you: we will examine potential bottlenecks in your Power BI report - starting with defining the best practices for data model size optimization, understanding the importance of query folding feature, all the way to identifying culprits for your slow report rendering. We will wrap it up with learning when and why (not) to use DirectQuery mode, and how to apply improvements on the data source side to make things faster in the Power BI.

Participants will walk out well-equipped to identify the potential Power BI development areas that need improvement. By understanding specific important concepts and features, and the way Power BI works internally, participants will be able to create highly efficient reporting solutions.

We will wrap it up with learning when and why (not) to use DirectQuery mode, and how to apply improvements on the data source side to make things faster in the Power BI. We'll also examine how to get the most out of the latest Direct Lake mode in Microsoft Fabric, and in which scenarios makes sense to go this route.