What is tower used for?

Could you elaborate on the purpose of a "tower" in the context you're referring to? Are you referring to a physical structure, such as a skyscraper or a tower used for communication purposes? Or are you possibly asking about a term used in the cryptocurrency or finance industry that I'm not immediately familiar with? Without more context, it's difficult to provide a precise answer, but in general, towers can serve a wide range of purposes, from housing offices and businesses to transmitting signals for communication and broadcasting.