Me and my friends have a map, but can only play it if the creator of the map also plays the map. Now we had the idea that we would create a server such as Aternos and play this map there. Does anyone know how this works?
The server remains online as long as at least one player is online. How many slots are free does not matter.
How to upload a world to a hosted server always depends a bit on the hoster. At Aternos it works like this: https://support.aternos.org/hc/en-us/articles/360027235751-Upload-a-world
With Minecraft Bedrock Edition, it is important to note that there are several options for the server software used. In your case you would have to use the official Bedrock server software from Mojang, as the alternatives (like Pocketmine) have additional functions and support plugins, but are not compatible with normal Bedrock Edition worlds.
