What do you like best about the product?

It is so easy to setup and use. Also, tailscale is very good at finding the shortest route between devices - giving it an edge over using a standard self-hosted vpn like OpenVPN or Wireguard. Additionally, tailscale allows you to "share" devices, this, in addition to the simple setup process, makes it an invaluable tool when doing troubleshooting for others.

What do you dislike about the product?

The IOS app needs some heavy improvement. As far as usability, the app works relatively fine, however it tremendously drains battery life. Also, in networks where 'tailscale.com' is blocked, the app will not connect - this is also an issue when using a desktop computer. The DERP servers should be implemented in a way that allows for connection around this method of blocking.

What problems is the product solving and how is that benefiting you?

We needed a way to access devices from outside of our internal network. Tailscale greatly simplified and improved this system, especially with their DERP relays, which allow firewalled devices to connect to the same network. Previously, we used Wireguard/OpenVPN to do this. We needed this system because Wireguard provided speed advantages, and OpenVPN could be run on TCP port 80 (to get around most firewalls). Additionally, tailscale was a 'subnet router' that allows the entire internal network to be exposed with only one tailscale-connected device. This allows for seamless connection with out internal servers from anywhere in the world.