Serverless Cost Controls Cheat Sheet

Concurrency caps, memory tuning, and throttles

Last Updated: November 21, 2025

Focus Areas

Focus
Pair budgets with alerts and anomaly detection
Use concurrency limits to dampen traffic spikes

Commands & Queries

aws lambda put-function-concurrency
Limit concurrency per function
aws budgets create-budget --limit ...
Create a spend guardrail
aws cloudwatch put-metric-alarm ...
Alert on invocation spikes

Summary

Tie budgets to alerts and limit concurrency to predictable levels.

💡 Pro Tip: Set budgets, monitor invocations, and cap concurrency per function.
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