Here is a summary of the provided text in one paragraph: A developer discusses the importance of observability when building Python applications on AWS Lambda, particularly for serverless applications that can scale rapidly and introduce issues. To monitor and debug Python Lambda functions, they use Lumigo, an account connected to AWS, and set up a simple API gateway with a Python Lambda function querying a random record from DynamoDB. The developer extends the Lambda function to support POST requests by reading the `httpMethod` variable from API Gateway and uses Lumigo's auto-tracing feature to identify issues, such as incorrectly implemented HTTP proxy integration. They highlight the benefits of integrating tracing from the start and using execution tags for additional information gathering and troubleshooting capabilities.