Because Blackboard was used as example, I just wanted to note that there are also open-source alternatives: A larger number of German public universities use IL

Because Blackboard was used as example, I just wanted to note that there are also open-source alternatives: A larger number of German public universities use ILIAS instead https://www.ilias.de/en/ https://www.ilias.de/en/. While it has its quirks, I find it to be much more usable and flexible than Blackboard