Is AWS X-Ray APM?

Enables AWS X-Ray (https://aws.amazon.com/xray/) for the entire Serverless stack or individual functions .

To configure X-Ray integration on an AWS Lambda function

First of all AWS X-Ray is not a full APM tool , it provides data on distributed traces for applications running in AWS. X-Ray provides distributed tracing for developers, so they can analyze performance and availability of their services and applications running on AWS EC2, AWS Container Service or AWS Beanstalk.