Cost Efficiency — Middle¶

Measure cost per request, tenant, event, job, or stored TB-month. Include egress, replication, backups, observability, and operational labor. Rightsize from distributions and headroom, not average utilization.

Use storage tiers and lifecycle rules according to access and recovery needs. Treat efficiency as a product property: reduce work, data movement, serialization, and repeated queries.

Test yourself¶

1. Which unit cost matches the product?
2. How does egress alter architecture?
3. Which data can move to colder storage?
4. What headroom must remain?

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