Firebase is a serverless service that allows you to run your (mobile) app backend with zero effort.
A very useful use-case is that you can create REST API Endpoints with Cloud Functions. On-demand, serverless code targeted via REST requests - a dream coming true!
This video also has an accompanying article: https://www.academind.com/learn/firebase/cloud-functions/creating-a-rest-endpoint-with-cloud-functions
Source Code: https://...