Currently, you can easily find several blog posts and tutorials explaining how to build your own Lambda functions in Ruby, most of them using the famous Hello World as example, which is good as a starting point, but, let’s be honest, you won’t need to build something as simple as a Hello World. You will need to face real-world issues regarding automated testing, using other services, building/deploying, handling dependencies, etc.

Read more: https://dev.to/jalerson/building-aws-lambdas-for-real-world-using-ruby-and-serverless-framework-2p49