On Amazon the listing is the funnel and the buy box is the prize. Win the search term, convert the click with A+ content, let Sponsored Products buy you the data, then let reviews and rank compound so paid gets cheaper while organic does the selling.
Win the search term, then win the buy box from two directions at once: optimise the organic listing and A+ content in
Seller Central while Amazon Ads buys the early velocity, both converging on the same detail page before reviews and reprice compound. Not doing: writing the listing before the keyword research, or judging Sponsored Products on ACoS alone in the launch window.
Cycle & hand-offs: Keyword & listing research runs monthly and starts the cycle. Hand-offs: Keyword & listing research → Optimise listing & A+ content: straight away; Keyword & listing research → Run Amazon Ads: straight away. Runs on its own rhythm: Harvest reviews (weekly (Mon)); Reprice & iterate (weekly (Mon)). Any other link waits for a person. Sign-off steps stay with a person; everything else can run on its own once armed.