Answer: Implement Lambda layers for the libraries.

The best approach to manage shared custom libraries for multiple AWS Lambda functions with minimal development effort is to use Lambda layers. Lambda layers allow you to package, centrally manage, and version your code and libraries. They are specifically designed for sharing code across multiple Lambda functions, making it easy to update and maintain the libraries in a single place. This solution does not require the implementation of additional services or significant changes to existing workflows, making it the most efficient and effective option.

Author: LeetQuiz Editorial Team