"What do we own and where?", answered by a search box.

Inventory scripts had calcified into a small library nobody trusted entirely. Each script took an account list and an SSO profile and ran sequentially. A "how many Lambdas do we have" question took most of a morning, and the answer came with footnotes about which accounts had failed authentication.

Resource Explorer with a cross-account aggregator solved the problem at the AWS layer. The aggregator index landed in the security account; team-specific views surfaced through QuickSight dashboards. Tag policies (already in place) gave the search box useful filters.

Engineers who used to ask "can someone run the script" now type into a search box. Inventory questions are answered in under ten seconds. The legacy scripts moved to a "retired" folder; two were preserved for genuine edge cases Resource Explorer doesn’t cover (Step Functions execution history, for instance).