Cloud bills rarely explode overnight. They creep — an oversized instance here, an unattached volume there, a forgotten test environment running since last quarter. The good news: most savings come from hygiene, not heroics.
Start with visibility, not cuts
You cannot optimize what you cannot attribute. Before touching a single instance:
- Enforce a tagging baseline: owner, environment, application, cost-center.
- Turn on billing exports and review them monthly with the application owners, not just finance.
- Flag untagged resources weekly — untagged usually means unowned, and unowned means waste.
The ten-point checklist
- Right-size compute against 30-day utilization, not launch-day guesses.
- Delete unattached storage volumes and orphaned snapshots older than your retention policy.
- Schedule non-production environments to stop outside business hours.
- Review load balancers, NAT gateways, and idle IPs — fixed-cost services add up quietly.
- Move infrequently accessed data to cheaper storage tiers with lifecycle rules.
- Commit to reserved capacity or savings plans only for workloads with a stable 12-month baseline.
- Cap log retention and verbosity in dev/test.
- Audit cross-region data transfer — replication topology mistakes are expensive.
- Kill zombie test environments with an expiry tag and an automated reaper.
- Re-run the whole list quarterly. Optimization decays.
What not to do
Never trade DR readiness for a line item. Deleting "idle" standby capacity that exists for failover is not optimization — it's risk transfer to your worst day.
Keep your RPO/RTO commitments, monitoring coverage, and backup retention out of scope for cost cuts unless leadership explicitly re-accepts the risk in writing.
Measure it like an SLA
Treat cost the way you treat uptime: a monthly report, a target, and an owner. A simple scoreboard — spend per environment, month-over-month delta, top five movers — keeps optimization alive long after the first cleanup sprint.
Need a hand? IOPSSOL runs this checklist as part of our managed Cloud Operations service, with monthly reporting and governance built in.