Up to my experience I find "Design a course" a #1 software for delivering courses online.

It's effective, reliable, and saves time in a very simple professional way.

Compared to an old system of making online courses as Ms-Word to Notepad.

It sums up a whole delivery of a course that covers multimedia, pictures, sounds, .. with just a click.

No need to make links from a page to the other for it's enough to put it in a directory and the order runs on.

Uploading the course is done also with a click as self installment where there's no need to upload file per file in a folder.