I've successfully deployed the app from the tutorial here: https://github.com/awslabs/aws-api-gateway-developer-portal
Now, how can I either heavily customize the client or write a new one? Can I somehow do development locally and point the app to AWS resources. Are there any tutorials to do smth like that - write client and then integrate it with AWS IAM, Lambda and API Gateway. Or I have to do that within AWS environment? In this case do I use something like this: https://aws.amazon.com/getting-started/hands-on/build-modern-app-fargate-lambda-dynamodb-python/module-two/