WillemNorval Unfortunately (or fortunately) the landscape in and around Moodle is huge. At the center is the Moodle software "core" https://download.moodle.org/. And there is a huge collection of plug-ins https://moodle.org/plugins/. The "hub" of voluntary community on these things are around https://moodle.org/. Then there are many derived projects - some commercial, some non-commercial - with their own "hubs". MoodleBox https://moodlebox.net/ is one of them - a non-commercial one.
I didn't know about anything about the Internet-In-A-Box. What I found in the Internet tells me that is has nothing to do with Moodle.
What are you looking for exactly? Support for making an IIAB Box? Sorry, then you are in the wrong site. Or do you want to make a MoodleBox and don't know how? Then you can keep on asking. ;-)