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Retail & Commerce
11 min read

Retail Media Bidding: Optimise Walmart Connect Ads

Whizcrow Team

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Master Walmart Connect bidding with keyword tactics, dynamic bidding, and ROAS strategies to maximise conversions and ad ROI.

Published
November 14, 2024

When it comes to digital shelf space, the fight is real. And within the Walmart ecosystem, that fight takes place in the bidding arena of Walmart Connect ads. If you're investing in retail media and not giving your bidding strategy the love it deserves, you're essentially showing up to a duel with a butter knife. Let’s sharpen that blade.

Walmart Connect is a treasure trove of first-party data, real-time shopping intent, and vast reach. By harnessing this potential and optimising your bidding strategies with precision, data, and a touch of algorithmic finesse, you can pave the way for significant growth and success.

Here’s how to fine-tune your campaigns to get the most from Walmart’s powerful platform.

Get Retail Ready: It Starts with the Basics

Before you even think about bidding, ensure your product listings are polished and ready to convert.

  • Titles, images, and descriptions should be polished, keyword-rich, and aligned with your ad goals.
  • Make sure inventory is healthy—out-of-stock products = wasted ad spend.
  • Your Buy Box ownership needs to be stable—ads won’t run effectively if you’re not winning the Buy Box.

Think of this as setting the table before dinner—you need the right foundation for any strategy to succeed.

Set a Smarter Bidding Strategy

Let’s dive into the meat of it: bidding on Walmart Connect isn’t just a set-it-and-forget-it deal. It's an evolving dance between data, automation, and audience behaviour. By understanding and leveraging these factors, you can take control of your bidding strategy and steer it towards success.

Use Suggested Bids Wisely

Walmart Connect offers suggested bids for each keyword based on real auction data. While these aren't gospel, they offer a solid benchmark to start from, especially for new campaigns. Use them to understand the competitive landscape and calibrate your bids accordingly.

Pro tip: Use suggested bids as a baseline, but test going slightly above to capture more impressions early on.

Activate Dynamic Bidding

This feature deserves a spotlight. With dynamic bidding, Walmart automatically adjusts your bids in real-time, increasing or decreasing them based on the likelihood of conversion. Here’s how it works:

  • Up to +100% increase if Walmart thinks the user is likely to convert.
  • Down to -50% decrease if not, but never below the floor price.

Brands using dynamic bidding during beta testing reported up to a 199% increase in sales. That’s not just good, it’s essential for serious advertisers.

Target ROAS: Set Your ROI Compass

Want to aim high and let Walmart’s algorithm do the math? Set a Target ROAS (Return on Ad Spend). This goal-based strategy lets Walmart adjust its bids to achieve its desired return.

  • Ideal for scaling budgets with precision.
  • Most campaigns hit 85%+ of their ROAS targets.

Instead of manually micromanaging bids, focus on your profitability goals and let the platform automate the rest.

Match Type Optimisation: Know Your Keyword Matches

Keywords are more than buzzwords—they’re the GPS of your campaign. And how you match them determines where your ads appear.

Broad Match

Casts a wide net by matching searches with related terms and synonyms.

  • Pros: Great for discovery and volume.
  • Cons: Risk of irrelevant traffic—keep a close eye on search terms.

Phrase Match

Triggers your ad when someone searches for your keyword in the correct order, even with added words.

  • Best for balancing reach and relevance.
  • Good for mid-funnel shoppers.

Exact Match

The holy grail of high intent. Your ad shows only when the exact keyword is searched (or close variants).

  • Use your highest bids here—this match type converts like a charm.
  • Ideal for shoppers already in the buying mindset.

Pro Tip: Apply tiered bidding—highest for exact match, moderate for phrase, and lower for broad.

Keyword Research: Follow the Shopper

You’re not just targeting keywords—you’re targeting people with needs. Start by understanding what they’re searching for.

Understand Customer Behaviour

Dig into search term reports, use Walmart’s Search Term Insights, and identify the language your target audience uses. Align your keywords with their buying journey.

For example:

Instead of targeting just "protein powder," try layering in intent-focused keywords like "best protein powder for weight loss."

Spy on the Competition (Nicely)

Analyse what your competitors are bidding on, what keywords they rank for, and how their ads look. Tools like Teikametrics, Helium 10, or even Walmart's dashboards can give you an edge.

Smart marketers aren’t just reacting—they’re predicting.

Budget Strategy: Scale Without Spilling

Don’t burn through your budget chasing vanity metrics. Be strategic.

  • Start conservatively to test and learn.
  • Gradually scale successful campaigns.
  • Allocate 20–30% of budgets toward ongoing optimisation, not just media spend.

Utilise automated budget allocation tools to reallocate funds toward high-performing campaigns and eliminate underperformers before they erode your ROI.

Test, Learn, and Adapt: A/B Testing is Your Superpower

Let’s get experimental. Testing different creatives, formats, and keywords can reveal what actually drives performance.

What to Test:

  • Product combinations
  • Headline variations
  • Creative formats (image vs. video)
  • Placement strategies

For Sponsored Brands, try testing 3–4 variations simultaneously. Use Walmart’s Ad Centre dashboard to track performance. A/B testing isn’t optional—it’s how you win consistently.

Negative Keywords: Don’t Pay for the Wrong Clicks

We love visibility—but only the right kind.

Use negative keywords to filter out irrelevant or non-converting search queries. For example:

  • Selling premium kitchenware? Exclude “cheap” or “discount.”
  • High-end electronics? Remove terms like “budget” or “refurbished.”

Update your negative keyword list monthly to avoid wasting ad spend and improve targeting precision.

Walmart's Bidding Auction: Know the Rules

Walmart Connect operates on a second-price auction model. That means:

  • You pay just above the second-highest bid, not your maximum bid.
  • Relevancy still plays a huge role—more relevant ads win placements even with slightly lower bids.

Use bid multipliers to fine-tune your strategy. Want to prioritise mobile shoppers or show more during peak evening hours? Adjust your bid modifiers accordingly.

Precision Targeting with Audience Segmentation

One of the greatest advantages of Walmart Connect is its first-party data. Why guess when you can target with surgical precision?

Use Walmart’s Audience Tools:

1. Lookalike Audiences

Reach new shoppers who share characteristics with your best customers. Walmart's algorithm identifies shoppers who are similar in behaviour, demographics, and purchase intent.

  • Great for expanding reach without sacrificing relevance.
  • Particularly effective for seasonal pushes and new product launches.

2. Retargeting Pools

Re-engage users who viewed products, added them to the cart, or bounced just before checkout. These shoppers are already familiar with your brand—give them the gentle nudge they need.

  • Expect higher ROAS and lower CPA.
  • Perfect for recovering almost-lost conversions.

3. Seasonal and Event Targeting

Align your bidding and creative with holidays, retail events (such as Black Friday and Back to School), or category-specific seasons (e.g., grilling gear in the summer).

  • Add time-based bid modifiers for peak windows.
  • Combine with tailored creatives and copy.

Think of Walmart’s audience targeting like a heat-seeking missile. When calibrated correctly, it knows exactly where to go.

Full-Funnel Campaign Structure

Not all shoppers are created equal. Some are simply browsing; others are ready to make a purchase right now. Your strategy should reflect this with a full-funnel approach.

Top of Funnel (Awareness)

Display Ads & Offsite Media

  • Build brand awareness and attract new customers.
  • Use creative visuals and branded storytelling.
  • Best for new product launches and brand building.

Mid-Funnel (Consideration)

Sponsored Brands & Sponsored Videos

  • Showcase product collections or benefits.
  • Use A/B-tested headlines, benefit-driven copy, and engaging visuals.
  • Target shoppers who’ve interacted with related categories.

Bottom of Funnel (Conversion)

Sponsored Products

  • Capture high-intent shoppers.
  • Focus on exact match keywords and retargeting.
  • Optimise bids aggressively for top-performing SKUs.

Mondelez successfully implemented this approach, reporting a 53% year-over-year sales increase by combining Sponsored Products, Display, and Offsite media.

Ad Format Optimisation: Get Creative (Strategically)

Different formats serve different purposes. Testing and layering them can significantly boost performance.

Sponsored Products

  • Core format for direct sales and Buy Box items.
  • Prioritise high-converting, in-stock products.
  • Use dynamic bidding and exact match targeting.

Sponsored Brands

  • Tell a broader brand story.
  • Highlight multiple products or categories.
  • Perfect for mid-funnel shoppers comparing options.

Sponsored Videos

  • Use autoplay video to capture attention in search results.
  • Great for demonstrating product value in under 30 seconds.
  • Works well for visual categories such as beauty, electronics, or consumer packaged goods (CPG).

Display Ads

  • Appear throughout Walmart’s digital ecosystem.
  • Ideal for retargeting and brand awareness.
  • Pair with lookalike and seasonal audiences for maximum impact.

Kraft Heinz saw a 35% conversion lift and a 45% increase in new buyers with Display + Offsite audio/video ads during football season.

Search Term Analysis: Follow the Clues

Don’t just look at metrics—study shopper language. Walmart’s Search Term Insights lets you analyse:

  • Which keywords triggered your ads
  • Which converted
  • Which wasted spend

Reinvest your budget by:

  • Pausing low-ROAS keywords
  • Increasing bids on high-intent, high-converting terms
  • Using search trends to identify new keyword opportunities

Search behaviour is your roadmap. Follow it, and you follow the money.

Strategic Budget Management: Spend Smarter, Not Just More

A big budget helps, but how you use it matters more.

1. Automate Budget Distribution

Utilise Walmart Connect’s automation tools to reallocate budgets across campaigns in real-time based on performance. This keeps your top performers well-fed and prevents waste.

2. Scale Intelligently

Start small, measure results, and scale what's working. Avoid pouring money into campaigns until they’ve proven themselves.

  • Set daily and lifetime budgets to control spend.
  • Monitor pacing to ensure you’re not exhausting your budget early in the day.

3. Device and Placement Modifiers

Apply bid multipliers based on:

  • Device (mobile vs desktop)
  • Placement (search results, Buy Box, etc.)
  • Time of day (peak hours for your category)

Example: Bid higher during lunch breaks if your audience shops then.

Continuous Monitoring and Agile Optimisation

Walmart Connect campaigns are not crockpots—don’t set it and forget it.

Monitor Key Metrics

  • Cost Per Click (CPC)
  • Cost Per Acquisition (CPA)
  • Return on Ad Spend (ROAS)
  • Click-Through Rate (CTR)
  • Impressions and Conversion Rate

Use Walmart’s dashboards to slice performance by device, geography, keyword, and more.

Keep Inventory Healthy

Your best campaign means nothing if you're out of stock. Use inventory alerts and pause ads on unavailable SKUs to avoid wasted spend.

Refresh Creatives Regularly

Don’t let ad fatigue set in. Rotate creatives, update seasonal visuals, and test new headlines monthly.

Advanced Tips and Real-World Examples

If you want to go from "just running ads" to dominating Walmart Connect, learn from the best.

Case Study: Camera Brand

  • Used Walmart’s dynamic bidding beta
  • Achieved a 199% surge in sales and 35% higher conversions

Case Study: Kraft Heinz

  • Combined onsite display with offsite video ads
  • Focused on the football season timing
  • Resulted in 35% conversion lift and significant brand growth

Summary Table: Advanced Bidding Optimisation Tactics

Tactic

Purpose

Benefit

Lookalike Audiences

Reach similar users

Expands reach while keeping relevance

Retargeting Pools

Re-engage potential buyers

Improves CPA, boosts conversions

Seasonal Targeting

Align bids with key events

Captures high-intent seasonal traffic

Full-Funnel Ad Strategy

Layer formats for buyer stages

Increases engagement and purchase likelihood

Sponsored Video Ads

Visual product education

Boosts engagement and CTR

Bid Multipliers

Prioritise high-value segments

Boosts ROI on specific devices/times

Creative Rotation

Prevents ad fatigue

Maintains CTR and freshness

Budget Automation

Allocate funds dynamically

Focuses on high-performing campaigns

Real-Time Monitoring

Keep a pulse on campaign health

React faster to market changes

Final Thoughts: The Retail Media Opportunity

Optimising your Walmart Connect bidding strategy is not just about increasing your ad spend or following a set formula. It’s a dynamic, data-driven process that demands attention, experimentation, and refinement. When done correctly, it transforms your campaigns from basic promotions into precision marketing tools that drive measurable growth.

The key is to approach Walmart Connect as more than just a media platform—think of it as a high-performance machine that, when tuned properly, can deliver exceptional returns. Tools like dynamic bidding and Target ROAS help automate and scale performance, while smart keyword strategies, match type optimisation, and negative keyword management ensure you're targeting the right shoppers at the right time.

Equally important is how you layer your efforts. A full-funnel strategy that combines Sponsored Products, Display Ads, and Sponsored Brands or Videos doesn’t just help you reach more people—it helps you reach the right people, at every stage of the buying journey. Each format serves a different role, from brand discovery to purchase conversion, and when used together, they compound results.

And don’t overlook the power of Walmart’s first-party data. With advanced targeting options like lookalike audiences, retargeting pools, and seasonal segmentation, you can move beyond generic advertising and deliver truly personalised shopper experiences.

Ultimately, winning with Walmart Connect is about commitment to continuous improvement. Test, learn, adapt, and scale what works. Monitor your metrics, adjust your bids and creatives, and stay agile. Retail media is no longer optional—it’s a competitive necessity. By mastering your bidding strategy now, you’re not just keeping up. You’re pulling ahead.

This article represents our current perspective on the subject.
To learn more about how we apply these insights for our clients, please get in touch.

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