How to Do Custom Domains With Fly

Custom Domains with Fly is a new application guide that demonstrates how to use Fly to proxy traffic or serve applications for multiple custom domains. The guide covers configuring an NGINX server, attaching host and domain names using the flyctl command line tool, and utilizing Fly's GraphQL API for managing hosts and certificates. Additionally, it provides a repository of Node applications that showcase how the API works and can be customized. A speed run example is provided to illustrate the ease of adding a host/domain to an application. Fly allows unlimited certificate attachments, making it suitable for businesses with branded applications and custom domains. The guide encourages users to explore more about Fly through its Docs and Hands On section.