DiSC® is a personal assessment tool used by more than one million people every year to help improve teamwork, communication, and productivity in the workplace. Organizations and facilitators use these profiles as tools to help ignite cultural change, inspiring lasting behavior changes that positively shape their workforce.
You find all information about it, on their homepage here: Discprofile.com
Understanding one self and others based on a personal character profiles like DISC is more than valuable. It helps to reflect and understand why people behave the way they do and what the best way might be to cooperate and collaborate.
My personal DISC Profile is called: DC Style. You can read about it here, if you want to understand a bit more about my personality: DiSC DC styles

