A three-phase structure for optimizing an Amazon listing for the Amazon A9 Algorithm:
Claim: sellers who fail either skip step 1 (guess at keywords/PPC instead of reverse-engineering competitor data) or skip step 3 (stop after publishing without confirming Amazon indexed and ranks the listing). Contrast with Two-Step Conversion-Then-Indexing SOP, a troubleshooting order-of-operations for an underperforming listing rather than an initial build sequence.
Keyword research is the first of the three steps because Amazon's A9 algorithm ranks listings primarily on keyword relevancy plus sales performance — a listing that isn't indexed for a keyword, or is indexed but never converts on it, cannot rank for it regardless of how well the "build" and "validate" steps are executed. This is why the framework starts with research rather than copywriting: the keyword list produced here (see Helium 10 Four-List Keyword System (Main, Related, Misspelled, Master)) constrains everything downstream, including title structure (A9 Title Keyword Weighting (Position & Phrase Match)) and PPC campaign structure (Six-Campaign PPC Launch Structure).