Prime Day Advertising Strategy: Before, During, and After

Most Amazon sellers treat Prime Day like a regular day with bigger budgets. They raise their budget cap the night before, watch the numbers spike, and congratulate themselves on higher sales — without ever knowing whether they maximized the opportunity or just rode the wave that was coming regardless.

Prime Day is the highest-stakes 48 hours on Amazon’s calendar. CPCs spike. Competition intensifies. Shoppers are actively hunting for deals. If your strategy is not specifically calibrated for this environment, you will overpay for results that should have been better.

Here is how to approach it systematically: before, during, and after.

The 30-Day Runway: Setting Up to Win

Build Your Ranking Before the Event

Prime Day rewards products that are already ranking well. The algorithm amplifies existing momentum — it does not create momentum for products starting from page three.

In the 30 days before Prime Day, run more aggressive campaigns on your core keywords to build organic rank. The sales velocity you create in June, if Prime Day falls in July, feeds the ranking position that determines how prominently your listing appears when tens of millions of shoppers flood the platform during the event.

Target your top five keywords for page-one organic ranking before Prime Day. Products that enter the event with strong organic placement capture both paid and organic traffic simultaneously. Products on page three capture only what their PPC budget can buy.

Build Your Review Count

Reviews drive conversion rate. Higher conversion rate during Prime Day translates directly to more sales and better organic positioning during and after the event.

If you have products approaching a review count milestone — say, sitting at 47 reviews heading toward 50 — push for that milestone before Prime Day. Use Vine, Request a Review consistently, and run enough advertising volume in the weeks before to drive the purchase volume that generates review accumulation.

A listing that crosses a review threshold before Prime Day outperforms one that crosses it during the event.

Finalize Your Deal Structure

If you are running Prime Exclusive Discounts or Lightning Deals, these need to be submitted weeks in advance. Amazon’s deadline for Lightning Deal submissions is typically 4–6 weeks before Prime Day. Miss this window and you are advertising around deals rather than advertising with them.

Even without official Amazon deal placements, a well-structured promotion can create the urgency that Prime Day shoppers respond to. A price reduction visible on your listing, a quantity bundle, or a coupon converts meaningfully better than your standard listing with no event-specific hook.

Set Your Event Budget

Prime Day budget planning starts with one question: how much are you willing to overspend per sale to gain the ranking and review momentum that pays dividends for the next six months?

Because CPCs on Prime Day can run 30–50% higher than normal, your ACoS will deteriorate if you hold your normal bid ceilings. You have two choices: accept higher ACoS in exchange for volume (the right choice for products that benefit from ranking momentum) or maintain strict ACoS targets and accept less volume (appropriate if margins are too thin to absorb the CPC premium).

Know which camp each of your products belongs in before the event starts. Products in the middle of a launch or ranking push should receive aggressive budgets with relaxed ACoS targets. Mature products with established organic rank can afford more conservative bidding.

The Live Event: 48-Hour Execution

Start Strong on Night One

Prime Day typically begins at midnight Pacific, and the first few hours have disproportionate impact. Heavy early buying drives hourly sales rank, which Amazon surfaces prominently to shoppers as social proof (“Best Seller in X category”). Getting on a hot list in the first hours creates a flywheel for the next 47.

For products where you have a strong deal or promotional hook, allocate a larger share of your Prime Day budget to the first 12 hours.

Increase Bids on Your Highest-Intent Keywords

Generic category keywords will get expensive and competitive fast. Focus your sharpest bids on the specific terms where your listing converts best. You know from your search term reports which keywords have your highest conversion rate — these are worth paying a premium for on Prime Day because your conversion advantage over competitors is greatest on these terms.

Broad, category-level keywords often see CPCs that make them unprofitable for most sellers during Prime Day. Unless you have exceptional margins or a deal that creates unusually high conversion rate, consider reducing bids on broad terms and redirecting that budget to your proven exact match performers.

Monitor Budget Depletion Closely

On a normal day, campaigns running out of budget at 3 PM is a problem you fix the next day. On Prime Day, budget depletion at 3 PM means you miss the highest-traffic evening hours of the most valuable two-day window of the year.

Check budget pacing every 2–3 hours on Prime Day. If campaigns are depleting before the evening peak, transfer budget from underperforming campaigns immediately. Having a reserve budget that you can deploy to top-performing campaigns if they exhaust by mid-afternoon is worth planning in advance.

Watch ACoS Hourly, Not Daily

On a normal week, reviewing ACoS daily gives you enough signal to make good decisions. During Prime Day, hourly shifts matter. A campaign that is delivering 45% ACoS in the morning may shift to 25% ACoS as the conversion rate spikes in the afternoon shopping peak.

Conversely, a campaign that looks fine at noon may be burning inefficiently by 10 PM as CPC competition peaks from late-day bidders. Monitor intraday performance and be ready to make adjustments.

Do Not Change Campaign Structure During the Event

The worst Prime Day mistake is restructuring campaigns, moving keywords, or reorganizing ad groups while the event is live. Amazon’s algorithm needs stability to deliver consistent results. Campaign changes during high-traffic periods can cause unpredictable performance.

Bid adjustments are fine. Budget transfers are fine. Structural changes — moving keywords, creating new campaigns, altering targeting — should not happen during Prime Day.

The Week After: The Window Everyone Wastes

Prime Day ends. Most sellers check their total sales number, feel good or bad about it, and go back to normal operations. This is a strategic mistake.

The week after Prime Day is one of the highest-value periods in your advertising calendar, and most sellers waste it entirely.

Why Post-Prime Day Matters

Three things happen in the aftermath of Prime Day:

Sales rank is elevated. Your 48-hour sales velocity during the event pushed your organic ranking up, often significantly. If you stop advertising immediately after the event, you let that ranking decay without capitalizing on it.

Shopping carts are full. Shoppers who discovered your product during Prime Day but did not buy are still in consideration mode. Your Sponsored Display retargeting audiences are packed with warm leads who recently viewed your listing.

Competitor spend drops. Many sellers pull back hard on budgets immediately after Prime Day as their teams recover. CPC competition drops. This is an opportunity to buy efficient traffic at prices you could not get during the event.

Retargeting Campaign Surge

Immediately following Prime Day, increase your Sponsored Display retargeting budgets significantly. Target shoppers who viewed your products during the event with reminder ads. The Prime Day browsing frenzy creates an unusually large pool of warm leads — people who looked at your product, compared options, and did not complete the purchase.

Many of these shoppers will complete their purchases in the days following the event. Your retargeting campaigns are what converts them.

Capitalize on Ranking Gains

If Prime Day pushed your product onto page one for a keyword where you were previously on page two or three, advertise aggressively on that keyword for 10–14 days after the event. The goal is to accumulate enough additional sales velocity to cement the new ranking rather than drift back to your previous position.

This is the compounding benefit that makes Prime Day worth investing in even at elevated CPCs. The ranking gains are worth paying for if you follow through to make them permanent.

Post-Event Analysis

Within 48 hours of Prime Day ending, pull your complete performance report and answer these questions:

• Which campaigns and keywords delivered the best ACoS?
• Which campaigns depleted budget before the evening peak?
• What was your total ROAS across the event versus your typical week?
• Which products exceeded expectations, and which underperformed?

The answers directly inform your strategy for the next major event — Prime Day 2 (October), Black Friday, and Cyber Monday. Amazon’s big shopping events follow similar patterns. Sellers who study their Prime Day performance in detail gain a durable strategic advantage over competitors who just move on.

Prime Day is not a lottery. The sellers who consistently win during major shopping events are the ones who treat them as carefully planned campaigns with clear objectives, not as a period where you raise your budget and hope. Preparation, intraday execution, and post-event follow-through determine results.

At AZvertising, we manage Prime Day strategy as a dedicated campaign within our client management process — with a pre-event checklist, live monitoring during the event, and a structured post-event optimization sprint. If you want professional support maximizing your next Prime Day, reach out to our team.