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Dev.to
6/19/2026
Set an AWS Billing Alarm Right Now — Before You Do Anything Else

Set an AWS Billing Alarm Right Now — Before You Do Anything Else

Short summary

Set up an AWS billing alarm through CloudWatch + SNS to catch runaway costs before they spiral. The critical gotcha: SNS sends a confirmation email that often lands in spam—skip this step and your alarm never fires. Takes five minutes.

  • •Create a CloudWatch alarm for total estimated charges with a threshold (starting at $5)
  • •Configure SNS topic to email you when threshold is exceeded
  • •Confirm the SNS subscription email (check spam folder if missing)

Generated with AI, which can make mistakes.

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