How important is a casino license in Austria?

Every online casino must have a license. For Austria, a license issued by the Special Gambling Commission is mandatory. Which gaming platforms do you know of in Austria with a license?

By playing only at high-quality casinos, players can rest assured that their data and funds are protected. Moreover, even fully legal and licensed casino sites can be of insufficient quality. Lately, I have been attracted to online casinos with pay-per-cell phone accounts. Since I live in Austria I use Smartbonus.at which I found quite accidentally in a google search.