Cloud cost basics: pay-as-you-go, idle resources, tagging.

Cloud cost hygiene

For Cloud cost basics: pay-as-you-go, idle resources, tagging., interviewers listen for a crisp definition, how the pieces interact in a real system, and one trade-off or failure mode you have seen or would guard against.

• Pay-as-you-go—turn off dev instances nights/weekends.
• Tag resources owner/env for chargeback.
• Right-size instances; S3 lifecycle to Glacier.