What size criterion must resources meet to be grouped in the aggregated Waterfall analysis?

The correct answer relates to how resources are treated within the context of the aggregated Waterfall analysis. In Dynatrace, for resources to be grouped in this analysis, they must meet specific visibility criteria. One key aspect of the Waterfall chart is to focus on resources that play a significant role in the user experience. When a resource occurs in less than 30% of user action instances, it indicates that the resource is not widely utilized across interactions. This can help in filtering out less relevant data, allowing better visibility and prioritization for analysis.

By focusing on resources that are infrequent, the aggregation process ensures that the analysis highlights more common resources that have a higher potential impact on performance and user experience. Resources that occur in a majority of instances are more likely to be relevant for performance optimization efforts, while those that occur in less than 30% can be categorized separately for additional examination if necessary, without cluttering the main analysis. This approach helps in clarifying which resources require attention for performance improvements and aids in identifying potential bottlenecks more effectively.