The article discusses how exe.dev handles SSH connections for multiple VMs sharing the same public IPv4 addresses. By assigning each VM a unique IP relative to its owner, they can route SSH requests accurately using a combination of public keys and IP addresses. This approach allows users to access their VMs without needing a dedicated IP for each.

The article details a developer's experience transitioning from a traditional SSH model to a zero-trust connectivity solution using Tailscale. Initially facing issues with SSH key management and server abuse, the team implemented Tailscale for seamless server access, enhancing security and simplifying user setup. Future plans include allowing users to manage their own tailnets for better control.

exe.dev is a new virtual machine hosting platform that offers users flexible resource allocation for their VMs. You can quickly set up and manage Ubuntu machines with features like persistent disks and a private-by-default sharing system. The service is currently open for new users to explore.