Medium
Lambda
Regional
VPC Lambda functions should operate in multiple Availability Zones
NIST
Description
This control checks if a Lambda function that connects to a VPC is associated with more than one Availability Zone. The control fails if only one AZ is associated with the function.
Remediation
To ensure high availability, configure your function to connect to subnets in multiple AZs. For instructions, see Configuring VPC access in the AWS Lambda Developer Guide.
Steps
- Review the VPC configuration of your Lambda functions.
- Update the functions to connect to subnets in multiple AZs.
Compliance
NIST