Direct answer

Is provisioned concurrency the best solution for cold starts?

Provisioned concurrency is a useful tool but not a complete solution. While it keeps instances ready to handle requests, turning it on for everything at scale becomes extremely expensive. It's best used selectively on critical, user-facing functions rather than across all functions, especially those with unpredictable traffic patterns where the cost-benefit ratio is poor.

2 Feb 2026
serverless_applications

Short answer

Provisioned concurrency is a useful tool but not a complete solution. While it keeps instances ready to handle requests, turning it on for everything at scale becomes extremely expensive. It's best used selectively on critical, user-facing functions rather than across all functions, especially those with unpredictable traffic patterns where the cost-benefit ratio is poor.

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Is provisioned concurrency the best solution for cold starts?

Provisioned concurrency is a useful tool but not a complete solution. While it keeps instances ready to handle requests, turning it on for everything at scale becomes extremely expensive. It's best used selectively on critical, user-facing functions rather than across all functions, especially those with unpredictable traffic patterns where the cost-benefit ratio is poor.

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