The composite model enables you to have huge tables as a DirectQuery source, and some other smaller tables as in import mode. When we talk about huge tables, performance is always a challenge. In this session, we talk indepth about how aggregations can be helpful for speeding up performance. You can see how the terabytes of data can be analyzed and visualized in less than a second. Learn many tips and tricks and internals about aggregations in Power BI and usage of that in a composite model. The session is full of live demos.