Posted On: Dec 30, 2020

Amazon Lambda reduced the billing granularity for Lambda function duration from 100ms down to 1ms in the Amazon Web Services China (Beijing) region, operated by Sinnet, and in the Amazon Web Services China (Ningxia) region, operated by NWCD. This will lower the price for most Lambda functions, more so for short duration functions. Their compute duration will be billed in 1ms increments instead of being rounded up to the nearest 100 ms increment per invoke. For example, a function that runs in 30ms on average used to be billed for 100ms. Now, it will be billed for 30ms resulting in a 70% drop in its duration spend.

This change will make functions such as interactive web call, and data streaming – that tend to have short durations – even more cost effective to run on Lambda. Pricing or billing granularity for Requests or Provisioned Concurrency will not change. It won’t have any impact on how Provisioned Concurrency and Lambda Requests are billed today. This change doesn’t impact the customer experience through the Amazon Web Services Management Console, Amazon CLI, or SDKs. This change will be effective starting December 2020 billing cycle. For more information, visit Amazon Lambda Pricing