What your server runs on, how it reaches the internet, and how long it lasts.
Enterprise servers in a rack at my house in the UK. It isn't a data centre, and it isn't a cheap cloud server shared by hundreds of people. It's a homelab, which is why it's free and why it sometimes goes down.
The servers sit on a 900/900 Mbps fibre line. Upload speed matters most for a game server, and this line uploads as fast as it downloads.
Game traffic doesn't come straight to the house. It arrives through a tunnel from a DDoS filtering provider, so an attack on one server is dropped on their network and never reaches the line. That adds a few milliseconds of lag. In return, one attack can't take every server offline.
Filtering isn't a guarantee. A big enough attack can still cause trouble, but the worst case now is a slow server, not a dead one.
You manage your server through a standard Pterodactyl panel, signing in with Discord. Most games run on Linux.
Some game servers only come for Windows and run badly when forced onto Linux. For those, we wrote our own Windows agent for Pterodactyl, so they run natively on Windows through the same panel. As far as we know, nobody else has done that.
Your server stays on for as long as people play on it. There's no renewal link and no advert to watch.
If nobody joins it for 7 days, it's deleted to free the slot for someone else. It stays online for that whole week. Keep your own backups, because a deleted server can't be brought back.