Work out idle resource waste instantly with clear inputs, formula shown and shareable results.
Non-production environments are needed for roughly 50 of the week's 168 hours, so leaving them running wastes 70 percent of their cost. Scheduled shutdown outside working hours is the single largest and easiest cloud saving available. Unattached volumes and orphaned snapshots are the other classic waste category, invisible because no instance appears in the bill.
Idle waste
utilisation = needed hours / 168; scheduled spend = current x utilisation; waste = current - scheduled + unattached storage cost
Because it needs care with stateful services and CI runners, and because someone must own it. The saving is large enough that the effort almost always pays back within the first month.
Unattached volumes, old snapshots, unused elastic IPs, idle load balancers, empty NAT gateways and forgotten test databases. All bill continuously with no workload attached.