lambda-concurrency-check - AWS Config
This documentation is a draft for private preview for regions in the AWS European Sovereign Cloud. Documentation content will continue to evolve. Published: January 12, 2026.

lambda-concurrency-check

Checks if the Lambda function is configured with a function-level concurrent execution limit. The rule is NON_COMPLIANT if the Lambda function is not configured with a function-level concurrent execution limit.

Identifier: LAMBDA_CONCURRENCY_CHECK

Resource Types: AWS::Lambda::Function

Trigger type: Configuration changes

AWS Region: All supported AWS regions except China (Beijing), Asia Pacific (Thailand), AWS GovCloud (US-East), AWS GovCloud (US-West), Mexico (Central), Asia Pacific (Taipei), China (Ningxia) Region

Parameters:

ConcurrencyLimitHigh (Optional)
Type: String

Maximum concurrency execution limit

ConcurrencyLimitLow (Optional)
Type: String

Minimum concurrency execution limit

AWS CloudFormation template

To create AWS Config managed rules with AWS CloudFormation templates, see Creating AWS Config Managed Rules With AWS CloudFormation Templates.