We want to start a single business with a variety of different offerings that have their own identity to the public. We have an overarching business name that we think we would register as an LLC and obtain a tax id#, but then we want to use a different name for our website subscription service and another name for our recording studio, and so on.
Do each of these entities need to be registered as businesses, with different tax id's, etc.? If so, how would this be structured?
Or can we set up the one business and use other names like "doing business as". Or can we consider these simply different "products or services" of the over-arching business name?