Process without a controlling terminal

What happens with process when it is run without a controlling terminal? How is that process different from a standard processes? What features does it lose and what does it acquire? **UPDATE #1** The question listed as a possible duplicate: https://unix.stackexchange.com/questions/58186/concept-of-controlling-terminal-in-unix doesn't contain the answer. Also that other question is too broad and doesn't mention process qualities at all.