Amazon PPC glossary
Rule-based bidding and budget rules
Amazon's own native automation for bid and budget adjustments, set inside the advertising console at no additional cost.
Where it matters most: Book 5, The Advanced PPC Clarity Guide, in the chapter “Doing It, Hiring It, or Automating It.”
Go deeper
The glossary gives you the one-line answer. The Advanced PPC Clarity Guide explains why it matters and what to do about it.