Terminal, supported by Cloudlabs, allows developers to build applications on virtual servers that mimic the convenience of local builds combined with the scalability of cloud services. The Terminal API Ruby Library is a wrapper that enables Ruby applications to interface conveniently with the Terminal API. Supported by Cloudlabs, this Ruby wrapper supports Ruby 2 implementations and requires no dependencies.
This tutorial from the FINRA Technology website explains how even novice developers can create a basic REST service for evaluating whether a number is a prime or not. The service is built using automated computing service AWS Lambda, as well as AWS API Gateway and IAM for authentication.