The first version was a spreadsheet
In 2019 we were three people running an internal training programme, and the most useful thing we produced was a spreadsheet: for each subject, which course to take first, which to skip, and which one people always wished they had started with.
The spreadsheet got passed around. It kept being right. That was the whole insight, and it is still the product: the ordering matters more than the catalogue.
Seven years later there are 1,200 paths and 34 people, and we still turn down more course proposals than we accept. The constraint is not production capacity. It is finding people who are excellent at a job and willing to explain it while they are still doing it.