Ask Ubuntu is directly related to Stack Exchange. It is a dedicated question and answer website specifically for the Ubuntu operating system, and it operates as part of the larger Stack Exchange Network.
The Stack Exchange Network is a collection of numerous Q&A communities, each focusing on a specific topic, all running on the same underlying platform and software developed by Stack Exchange, Inc. Ask Ubuntu is one of these communities, providing a forum for users to ask and answer questions related to Ubuntu.
I am very glad for Stack Exchange in helping me.
They have alternatives for various topics that another board would not help with.
(Another exchange is less than helpful.)