My company's going to want to bring Trello internal if we want to use it for confidential data. Can you bring Trello internal, by running the SW on our own server, like one could with Stack Exchange?
As stated by Rich Armstrong, Director of Customer Operations
As described in their privacy section
This line does not say how well they will handle confidential data but that is a risk you are going to have evaluate based on the critical nature of your data.