AWS CDK: Should I be importing the *V2 modules?

Question

I'm just starting out with the AWS CDK for Python. I see in the reference, there are several modules that have V2 appended to them:

- `aws_elasticloadbalancing` vs `aws_elasticloadbalancingV2`

- `aws_apigateway` vs `aws_apigatewayV2`

I could not find this anywhere in the docs.

Riku_Kobayashi · Answer

Hello.

"aws_elasticloadbalancing" is used when creating a classic load balancer.  
Therefore, you need to use "aws_elasticloadbalancingV2" when creating ALB or NLB.  
https://docs.aws.amazon.com/cdk/api/v2/docs/aws-cdk-lib.aws_elasticloadbalancing-readme.html  
> The aws-cdk-lib/aws-elasticloadbalancing package provides constructs for configuring classic load balancers.

Use "aws_apigatewayV2" when creating Websocket and HTTP APIs, and "aws_apigateway" when creating REST APIs.  
https://docs.aws.amazon.com/cdk/api/v2/docs/aws-cdk-lib.aws_apigatewayv2-readme.html  
> This module supports features under API Gateway v2 that lets users set up Websocket and HTTP APIs. REST APIs can be created using the aws-cdk-lib/aws-apigateway module.

AWS CDK: Should I be importing the *V2 modules?

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