Most cloud bills grow because nobody owns them. The most effective cost programs do not start with reserved instances or commitment plans. They start with visibility and accountability.
1. Tag Everything
If you cannot attribute a dollar to a team, you cannot have a productive conversation about reducing it. Make tagging policy code, not paperwork.
2. Kill Zombies
Idle volumes, unattached load balancers, orphaned snapshots: every account has them. Schedule a quarterly sweep.
3. Right-Size in Real Time
Most workloads are over-provisioned. Use observability data to set sane defaults and let autoscaling handle the rest.
4. Commit Wisely
Reserved capacity is a discount, not a strategy. Commit only to the steady-state baseline you are confident in.
5. Make Cost a Product Metric
Engineers will optimize what they see. Expose cost-per-feature dashboards alongside your usual reliability metrics.