My favorite part of this deal is how you can use the same ticket in every city in Germany. Before you had to learn which app to install and then go through the (usually) broken registration setup. And you needed to learn the zones too.
Now I just arrive to a city and hop into the transport method of my choice.
This is my favorite thing about transport in Switzerland. If you have a general subscription you can use trains, buses, even ships.
There are exceptions such as privately ran gondolas going up to mountains but mostly you can just go anywhere without worrying about it.
Now I just arrive to a city and hop into the transport method of my choice.