How do I implement IAM authentication for APIs in API Gateway?

This video details how we can restrict AWS API gateway with IAM Lambda Code: ------------------------ import json def lambda_handler(event, context): message="I love my {}".format(event['Country']) return message Prerequisite: What is a Proxy? https://youtu.be/Fjexz_nbxiY Concept of Reverse Proxy & API Gateway https://youtu.be/X8VWVF-I7_4 Introduction to API Gateway with in-depth intuition https://youtu.be/8lCX7CaJ4wM Creating a POST Api | AWS API Gateway Passing Data to AWS Lambda https://youtu.be/vgl9q5Ox5LE Working With Query Parameters In API | API Gateway https://youtu.be/JoR7ECrHDtg Create a REST API on AWS | Step by Step Tutorial https://youtu.be/yp4YggJG9nA Usage Plan & API key - Amazon API Gateway https://youtu.be/fxtHYQJt94A To know more about Snowflake & different AWS services which can be used in Big Data with Cloud Computing , please refer this playlist : https://youtube.com/playlist?list=PLjfRmoYoxpNopPjdACgS5XTfdjyBcuGku