What is the role of `localhost` in conjunction with Cloudflare Tunnel?

`localhost` within a Cloudflare Tunnel context refers to the internal IP address assigned to your local machine by the Tunnel. Cloudflare assigns a unique IP address to your Tunnel, and `localhost` within that Tunnel environment points to that specific IP. This allows your application running locally to be accessed through the Tunnel's IP address, effectively making it accessible from the internet.