In the early days of iOS management, we had to use iTunes to load ctent iPads (no, I'm not kidding). It was extremely slow to install a single applicati, and you do not want to know how slow iTunes was during the iOS update process.
In 2012, Apple launched a tool called Apple Cfigurator dedicated to the preparati of iOS devices. mass deployment. It allowed you to cfigure up to thirty devices at a time (with a massive USB hub).
The Apple Volume Purchase Store was also launched at that time. It was a weird process if you cnected your VPP account to Apple Cfigurator, however.
When you have purchased an applicati, you have a spreadsheet with the iTunes codes listed. You must take the first code listed, cvert it to iTunes (to get the applicati file), and then load it into Cfigurator. He then asked for the spreadsheet (this was not even a .numbers file.)
There were early bugs that made this first code unusable in Apple Cfigurator after getting it back iTunes so I usually bought an extra code. Apple Enterprise Support was still …