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Know what you pay for
Group spending by system and owner. Identify unused resources and understand the demand behind the largest costs.
Measure before changing
Record usage, latency, error rates, and recovery needs. A cheaper configuration is useful only if it still meets those needs.
Change one thing at a time
Test the proposed change, compare the result, and monitor after rollout. Keep a recovery path for changes that affect production.
A planning guide. The right implementation depends on your system and requirements.
Talk through your next step