Online Casinos are known as Internet Casinos or as Virtual Casinos. They all need a license. Some Brands do not have their own licence, but they operate under the license of the “main” Game Provider. So, therefore, they do have a license that they operate under, but it is not the Casinos, but the Game Providers. This can be a warning sign if they are a new brand, but if they have been operating for a while, then you can be sure that they do take care of all the needed legal aspects and regulations.