PILLAR 11 · Core Operations
Marketplace & Retail Media Advertising
How marketplace ad auctions work, campaign setup and structure, and the metrics (ROAS, ACOS, TACOS) that tell you if a campaign is profitable.
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How Marketplace Advertising Auctions Work (Bidding, Relevance, Budget) · Onsite vs. Offsite Advertising, Explained
11.1 Advertising Fundamentals
How Marketplace Advertising Auctions Work (Bidding, Relevance, Budget)
The auction mechanics behind Amazon, Walmart, and other marketplace ad platforms — what actually determines who wins a placement.
Onsite vs. Offsite Advertising, Explained
The difference between ads shown within the marketplace itself versus marketplace-run ads shown on external sites and apps.
Retail Media Networks Explained (Why Marketplaces Are Becoming Ad Platforms)
Why Amazon, Walmart, and other retailers have built substantial advertising businesses on top of their marketplaces, and what it means for sellers.
Sponsored Products vs. Sponsored Brands vs. Display: What Each Format Is For
The three core ad format types on Amazon and Walmart, and which stage of the buyer journey each one targets.
Automatic vs. Manual Targeting: How to Choose
When automatic targeting's discovery advantage outweighs manual targeting's control, and a practical hybrid approach.
11.2 Campaign Setup & Optimization
How to Set Up Your First Sponsored Products Campaign
A step-by-step walkthrough of launching your first Amazon Sponsored Products campaign, with the settings that matter most for a first attempt.
How to Set Up Your First Walmart Connect Campaign
Launching a first Walmart Connect Sponsored Products campaign, and how the setup differs from Amazon Ads.
Campaign Structure Best Practices (by SKU, by Category, by Match Type)
Organizing campaigns for clean budget control and reporting as your advertised catalog grows.
Keyword Targeting and Negative Keywords for Marketplace Ads
Match types, building a keyword list from search term reports, and using negative keywords to cut wasted spend.
Bidding and Budgeting Strategy for Marketplace Ads
Manual bid strategies, dayparting, and allocating budget across campaigns as your advertised catalog grows.
Campaign Planning Template
A downloadable template for planning campaign structure, budget allocation, and target ACOS/ROAS before launch.
Advertising Budget Calculator
Estimate a realistic daily ad budget from your margin, target ACOS, and sales goals.
11.3 Measurement for Advertising
ROAS vs. ACOS vs. TACOS, Explained With Worked Examples
The three most commonly confused advertising metrics in marketplace selling, defined and calculated side by side.
Attribution in Marketplace Advertising: What You Can and Can't Measure
The limits of marketplace-native attribution windows and models, and what they systematically under- or over-count.
Incrementality Testing for Marketplace Ads
Designing a basic holdout test to measure the true incremental lift of a marketplace ad campaign.
How to Optimize an Underperforming Ad Campaign (Diagnostic Checklist)
A structured diagnostic sequence for figuring out why a campaign's ACOS is too high or sales are too low, before changing bids blindly.
Cross-Marketplace Advertising Comparison (Amazon Ads vs. Walmart Connect vs. TikTok Shop Ads vs. eBay Promoted Listings)
How the major marketplace advertising platforms compare on auction competition, minimum spend, targeting sophistication, and measurement.