How to Use a Single AWS API Gateway for Multiple AWS Lambda Functions

Thank you for your reply. Do you have Lambda proxy integration enabled? I tried the same settings in my environment, but no 404 error occurred.

Hi Yes, I did but it didn't work. I found the problem is Lambda Proxy forwarded requests within an incorrect resource path. My lambda function expected the path api/users but Lambda Proxy forwarded service1/api/users. That mean, they forwarded service1/{proxy+} instead of {proxy+} only.

So the question is how can I custom the Resource Path to forward for Lambda Function? Or Do we have other ways to solve it?

I don't think it's wrong for the path to be "service1/api/users" because the API under "service1" is being executed. For example, how about trying to redirect on the Lambda side as shown below?

def lambda_handler(event, context):
    return {
        "statusCode": 303,
        "headers": {
            "Location": "https://yyyyy.execute-api.ap-northeast-1.amazonaws.com/api/users"
        }
    }