What should the Administrator do to accomplish this?
Attach additional elastic network interfaces to the Lambda function
Configure AWS Application Auto Scaling based on the Amazon CloudWatch Lambda metric for the number of invocations
Ensure the concurrency limit for the Lambda function is higher than the expected simultaneous function executions
Increase the memory available to the Lambda function
Explanations:
Elastic network interfaces (ENIs) are used for VPC connectivity, not for scaling Lambda functions. Adding ENIs would not directly address scaling the Lambda function to handle more traffic.
AWS Application Auto Scaling is typically used for scaling resources like EC2 instances or DynamoDB tables, not directly for Lambda functions. Lambda functions scale automatically based on the number of invocations.
Increasing the concurrency limit for a Lambda function ensures that the function can handle a higher number of simultaneous executions, thus allowing it to scale appropriately with increased traffic.
Increasing memory affects the performance and execution time of the Lambda function, but does not directly scale the function to handle more simultaneous invocations. Scaling is controlled by concurrency limits.
If memory serves me right, the answer is:
Ensure the concurrency limit for the Lambda function is higher than the expected simultaneous function executions