Programmatic advertising is complicated. There’s no doubt about that.
This complexity explains why there is quite a lot of terminology involved, but it can seem quite opaque to the newbie.
Luckily, Econsultancy has a wonderful and thorough discussion and explanation of programmatic - Programmatic Marketing: Beyond RTB.
As a taster, I thought I’d throw some important terms into a glossary. It’s just the basics, but I hope it helps.