This document discusses serverless computing models. It begins with an introduction to backend-as-a-service (BaaS) and functions-as-a-service (FaaS). BaaS refers to services like Firebase and Auth0 that handle backend services, while FaaS refers to services like AWS Lambda and Azure Functions that allow uploading code snippets called functions. The document then provides a diagram showing the serverless processing model, with functions triggered by events through a REST API and integrated with continuous integration tools. It concludes by discussing advantages of the serverless approach like not having to manage servers and paying for compute resources only when functions are running.