Attribution first
A mandatory tagging policy enforced in infrastructure code turns one cloud bill into per-team budgets. Teams reliably reduce spend they can see and are accountable for.
Environment lifecycle
Ephemeral preview environments that expire, scheduled shutdown of non-production clusters outside working hours, and automatic cleanup of orphaned volumes and load balancers usually recover a fifth of total spend without touching production.
Then architecture
Storage tiering, cache placement, egress path changes and moving batch work to spot capacity produce the savings that survive the next twelve months of growth.