A company has an application that receives and processes purchase orders.

Use an HTTP proxy integration to pass XML requests to the application. For JSON requests, use API Gateway mappings to convert the purchase orders to XML. Use an AWS Lambda function that is integrated with API Gateway to call the application.

Use an HTTP proxy integration to pass XML requests to the application. For JSON requests, use an AWS Lambda function that is integrated with API Gateway to convert the purchase orders from JSON to XML and to call the application.

Use an HTTP custom integration to pass XML requests to the application. For JSON requests, use API Gateway mappings to convert the purchase orders to XML. Use an AWS Lambda function that is integrated with API Gateway to call the application.

Use an HTTP custom integration to pass XML requests to the application. For JSON requests, use an AWS Lambda function that is integrated with API Gateway to convert the purchase orders to JSON and to call the application.