Scalability is ensured by Power BI Consultant who create data models that are effective at handling massive amounts of data. To increase performance, they simplify computations and optimize DAX formulae. To organize and handle massive datasets, developers may also employ strategies like data segmentation, aggregations, and incremental data refreshes. To reduce speed bottlenecks, they also set up dashboards to load data only when needed, as opposed to pre-loading everything. Developers make sure that dashboards are scalable and responsive even as data volumes increase by testing and refining these solutions on a regular basis.