In the example in Figure 1, you have key metrics by region and state. If you wanted to provide a summary by state or region, traditionally your dashboard developer would need to create multiple queries or create multiple layers of business logic within the dashboard. This not only takes time, but also negatively impacts the end user experience.
Filtered Summary can automatically summarize your metrics by Region, State, or both dimensions by setting a few properties. Furthermore, a dashboard consumer can dynamically change the aggregation in real time.