Comprehensive and Detailed Explanation From Exact Extract:

Resolving and storing hostnames at the time a flow record is received means the platform does not need to resolve the hostname each time a report or widget is loaded, which:

Decreases database query times: Hostnames are already resolved, making queries for reports and dashboards much faster.

Flow views and widgets load faster: With DNS already resolved, the interface does not have to perform on-demand DNS lookups, reducing latency in the web console.

The SolarWinds documentation states:

"Immediate DNS resolution upon flow record ingestion reduces lookup delays during analysis and widget loading, resulting in improved performance and reduced query times."

Domain widgets and reports run with DNS names, but the core advantage is performance rather than widget availability.