A quick-start guide on hosting Express on Upsun

The quick-start guide details the process of hosting an Express application on Upsun, a Platform as a Service (PaaS). It provides step-by-step instructions for setting up a local Express project, including creating and configuring a Git repository and a simple "Hello World" Express application. After initializing the project locally, users are guided to generate necessary YAML configuration files using the Upsun CLI, which configures the application's behavior on Upsun. The guide further explains how to create a GitHub repository, push the local project to it, and subsequently set up an Upsun project that integrates with GitHub for deployment. It emphasizes that once the project is configured and linked to GitHub, the application is automatically deployed, becoming live without any additional deployment steps, and users are encouraged to explore and enhance their new live application through the Upsun console.