🎯 Overview
Conversion Rate optimization is about helping more visitors successfully move from browsing to purchasing. Rebuy’s Smart Flows + A/B Testing package gives you the tools to personalize that journey and continuously test which experiences make it easier for customers to convert.
Rebuy’s A/B Testing tools are built specifically for conversion rate optimization and allow merchants to experiment with on-site widgets, recommendation logic, Smart Cart experiences, Global Smart Flows, and other supported storefront experiences. Smart Flows adds another layer of personalization by letting you create conditional experiences based on campaign source, customer type, cart behavior, Klaviyo segments, and other targeting criteria.
For conversion-focused merchants, this combination is especially powerful when paired with Cart + Merchandising or Checkout + Post Purchase. Those packages provide the customer-facing recommendations, carts, checkout experiences, and offers you can optimize, while Smart Flows + A/B Testing helps you determine which experiences actually result in more completed purchases.
By implementing the strategies below, you can reduce guesswork, personalize the journey around visitor intent, and systematically identify the recommendations, offers, messaging, and experiences that lead to higher conversion.
📊 1. Build an A/B Testing Program Focused on Conversion
One of the most effective ways to improve Conversion Rate is to continuously test your customer experience instead of relying on assumptions. Rebuy’s A/B Testing functionality is designed for CRO and supports experimentation across experiences including Widgets, Smart Cart, Checkout Offers, General Experiments, Global Smart Flows, and other supported Rebuy surfaces.
Test Widget vs. Widget: Compare two different recommendation experiences to determine which one results in stronger engagement and conversion.
Test Widget vs. No Widget: Determine whether adding a recommendation experience actually helps customers convert or introduces unnecessary friction. Rebuy specifically identifies testing widgets against the absence of a widget as an A/B Testing use case.
Test Smart Cart Experiences: Compare different Smart Cart configurations to determine which cart experience produces stronger conversion and revenue metrics. Smart Cart A/B Testing is supported on Smart Cart V2.
Use General Experiments: Rebuy’s General Experiments can extend testing beyond widgets using storefront CSS/JS and page targeting, giving more advanced merchants additional ways to experiment with the shopping experience.
Review Performance in the A/B Testing Dashboard: Rebuy’s dashboard compares control and variation performance across supported experiment types.
Pro Tip: Start with areas closest to the purchase decision. Test PDP recommendations, Smart Cart, checkout experiences, and high-traffic merchandising placements before spending time optimizing lower-impact elements.
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🔗 2. Personalize the Journey With Link-Based Smart Flows
Customers arriving from different marketing campaigns can have very different expectations and levels of purchase intent. Smart Flows supports Link-Based Flows, which trigger when a shopper clicks a tracked URL and are designed for targeted promotions or time-sensitive campaigns. Rebuy specifically recommends them for traffic coming from channels such as email, ads, and social media.
Instead of sending every visitor into the same generic storefront experience, use Link-Based Flows to maintain continuity between the message that generated the click and what the customer sees when they arrive.
Personalize Paid Campaign Traffic: If an ad promotes a specific product, collection, or offer, create a Smart Flow that reinforces that same experience after the click.
Create Email + SMS Experiences: Use tracked links in lifecycle or promotional campaigns to deliver an offer or message tailored to the campaign.
Build Influencer or Affiliate Campaigns: Give visitors from a specific partner or creator a dedicated storefront experience.
Support Product Launches: Trigger launch-specific messaging, gifts, products, or promotions through a tracked campaign URL.
Use UTM-Triggered Offers: Rebuy documents UTM-triggered Link-Based Smart Flows as an option for campaign-specific Gift With Purchase experiences.
Measure Your Flow: Smart Flow reporting includes visitor metrics and, for Link-Based Flows, tracks clicks on the flow’s link.
Example Strategy:
Paid Social Ad
→ Customer clicks ad for Product A
→ Link-Based Smart Flow activates
→ Shopper sees campaign-specific messaging or offer
→ Product A and relevant supporting products are easy to find
→ Shopper completes purchase
Email Promotion
→ Returning customer clicks campaign link
→ Smart Flow activates a campaign-specific offer
→ Storefront experience reinforces the same promotion
→ Customer has a clear, consistent path to purchase
Pro Tip: Conversion often suffers when there is a disconnect between the promise made before the click and the experience after the click. Use Link-Based Smart Flows to keep the product, promotion, and messaging consistent throughout the journey.
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🧪 3. A/B Test Recommendation Logic + Promotional Thresholds
The products you recommend—and the conditions under which you display an offer—can materially change how customers move through the buying journey. Rebuy’s conversion-rate guidance specifically recommends A/B testing widgets, product recommendations, recommendation logic, bundles, calls to action, and page experiences to understand what resonates with customers.
Test Recommendation Logic
Rebuy A/B Testing allows you to experiment with on-site widgets and their underlying Data Sources, giving you a way to compare different recommendation strategies instead of using one universal recommendation rule.
AI Recommendations vs. Curated Recommendations: Compare algorithmic recommendations against products your merchandising team has intentionally selected.
Complementary Products vs. Best Sellers: Determine whether shoppers respond better to products directly related to what they are viewing or broadly popular products.
Different Cross-Sell Strategies: Compare multiple recommendation sets on PDPs, home pages, collection pages, or other supported widget placements.
Different Widget Placement: Test whether a recommendation performs better closer to the Add to Cart button or elsewhere in the shopping journey.
Widget vs. No Widget: Confirm that the recommendation itself contributes positively to conversion.
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Test Promotional Thresholds With Global Smart Flows
Smart Flows includes Cart Subtotal targeting with both standard and tiered modes, allowing you to route shoppers into different experiences based on their current basket value. Global Smart Flows can also be A/B tested through Rebuy’s native experimentation interface.
Test When an Offer Appears: Compare different cart subtotal requirements before triggering a discount, gift, message, or other promotional experience.
Test Lower vs. Higher Qualification Thresholds: Determine whether making an incentive easier to unlock produces more conversions.
Test Offer vs. No Offer: Determine whether the promotion is necessary to get shoppers across the finish line.
Test Messaging Around the Threshold: Compare direct value messaging against progress-oriented messaging.
Evaluate Conversion Alongside Revenue: A lower threshold may increase conversion while a higher threshold may generate larger baskets. Look at the total business impact rather than a single metric.
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Pro Tip: When possible, change one major variable at a time. If you simultaneously change the product, threshold, discount, layout, and language, it becomes difficult to understand what actually caused the improvement.
⚠️ A Note About Free Shipping Threshold Tests
Do not use different Rebuy variants to test two different actual free-shipping thresholds, such as $50 versus $75. Rebuy’s current Smart Cart documentation states that multiple free-shipping thresholds cannot be A/B tested because Shopify allows only one active free-shipping rate at a time; changing the visual threshold in Rebuy does not change Shopify’s shipping calculation.
You can still test other promotional thresholds, such as Gift With Purchase or discount qualification logic, where the underlying promotion can accurately match the customer-facing experience.
📈 Additional Conversion Rate Strategies & Use Cases
A/B Test Recommendations Across High-Intent Pages
Product recommendations can make product discovery easier—but too many irrelevant recommendations can also add noise. Use testing to identify the merchandising experience that makes buying easiest.
Key Actions:
Start With High-Traffic PDPs: Test recommendation products or logic on your highest-volume product pages.
Compare Product Strategies: Test complementary products, best sellers, curated products, or other relevant recommendation strategies.
Test Placement: Determine where recommendations contribute most effectively to the customer journey.
Test Against No Widget: Validate that the experience actually improves results rather than assuming more merchandising always performs better.
Scale Winning Logic: Apply successful recommendation principles to similar products and pages.
Rebuy’s CRO guidance specifically recommends testing recommendation logic and widget placement to understand which experiences produce stronger engagement and conversion.
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Create Different Experiences for New + Returning Visitors
Smart Flows supports Customer Type targeting, including Shopify customer tags as well as New Users and Returning Users based on session behavior. This allows you to avoid serving one generic experience to every shopper.
Key Actions:
Create a First-Visit Experience: Prioritize best sellers, education, trust, or an introductory promotion.
Create a Returning-Visitor Experience: Surface new products, recently relevant offers, or a different reason to purchase.
Use Shopify Customer Tags: Target meaningful customer groups when you have existing customer data.
Avoid Unnecessary Discounts: A returning customer who already intends to purchase may not need the same acquisition incentive as another shopper.
Test Your Experiences: Use Global Smart Flow experimentation where appropriate to determine which experience performs best. Rebuy’s native Smart Flow A/B Testing currently applies to Global Smart Flows.
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Pro Tip: Smart Flows’ New Users and Returning Users rules refer to browsing sessions. Rebuy considers a visitor returning when a session resumes after 30 minutes or more of inactivity; this should not be treated as the same thing as first-time versus repeat purchasers.
Personalize Experiences With Klaviyo Segments
Smart Flows supports Klaviyo Segment targeting, giving merchants another way to create customer-specific experiences based on audiences already defined in Klaviyo.
Key Actions:
Identify High-Value Segments: Start with audiences where a personalized experience has a clear purpose.
Create Segment-Specific Messaging: Tailor the promotion or message to the audience rather than simply changing the headline.
Create Different Paths: Build one experience for customers who match the segment and another for customers who do not.
Keep the Conversion Goal Clear: Every personalized experience should make the customer’s next action easier or more relevant.
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Important: Klaviyo Segment targeting in Smart Flows currently requires the customer to be logged into their Shopify account for the condition to match. Rebuy notes that this works differently from Klaviyo Segment targeting through Data Sources.
A/B Test Smart Cart for Fewer Purchase Barriers
If you also have Cart + Merchandising, Smart Cart is an ideal conversion-testing surface because it sits immediately before checkout. Rebuy’s Smart Cart experimentation feature is specifically designed to compare carts against conversion and revenue metrics.
Key Actions:
Test Cart Configurations: Compare simpler and more merchandising-focused experiences.
Test Cross-Sell Strategies: Determine whether different in-cart recommendations help or hurt conversion.
Test Promotional Language: Compare how incentives and benefits are communicated.
Test Checkout-Oriented Experiences: Look for configurations that make the path from cart to checkout easier to understand.
Select the Winning Cart Based on Results: Once the test concludes, Rebuy allows the winning Smart Cart to be enabled automatically or selected manually.
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A/B Test Messaging + Calls to Action
Sometimes the product and offer are correct, but the way they are presented creates unnecessary hesitation. Rebuy specifically recommends personalized widget language as an A/B Testing strategy for improving conversion.
Key Actions:
Test Benefit-Focused Headlines: Explain why the recommendation or offer is valuable.
Test CTA Language: Compare clear calls to action that make the next step obvious.
Test Product-Specific Messaging: Use language that reflects the product or campaign instead of generic copy.
Test Urgency Only When Accurate: If a promotion genuinely expires, experiment with time-sensitive messaging.
Keep Tests Focused: Avoid changing several unrelated elements simultaneously.
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Combine Link-Based + Segment-Based Personalization
As your Smart Flows strategy becomes more sophisticated, combine what you know about where a shopper came from with what you know about who they are.
Smart Flows supports Link-Based Flows for campaign-driven experiences, while Global Flows can use targeting rules such as Customer Type, Cart Subtotal, Date, Klaviyo Segments, Location, and Smart Search.
Key Actions:
Identify Traffic Context: Determine which campaign or channel brought the shopper to your store.
Identify Customer Context: Determine whether customer type or segment information should change the experience.
Match the Experience to Intent: Give the shopper the product, offer, or messaging most relevant to why they arrived.
Reduce Unnecessary Choices: Use personalization to make the journey simpler rather than adding more promotions.
Measure Performance: Use Smart Flow analytics and supported A/B experiments to identify which strategies should be expanded.
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🔗 Explore More Rebuy Features
Smart Flows + A/B Testing becomes even more powerful when paired with customer-facing Rebuy surfaces throughout the purchase journey.
Cart + Merchandising: Put your CRO experiments into action across Smart Cart, PDPs, home pages, collections, product recommendations, bundles, and pop-ups. Rebuy’s existing Conversion Rate guidance recommends testing recommendations and optimizing high-intent merchandising placements to create a more intuitive purchase journey.
Checkout + Post Purchase: Continue optimizing high-intent experiences once customers reach checkout. For Shopify Plus merchants, Rebuy supports testing Checkout Extensions such as product recommendations, trust-building content, and reviews to identify experiences that produce higher conversion. Post-Purchase can then create incremental revenue opportunities after the original conversion is already complete.
By combining continuous A/B testing, campaign-specific Smart Flows, and personalized recommendation logic, you can turn Conversion Rate optimization into an ongoing process rather than a one-time storefront project. Start by testing the customer-facing experiences you already have, build Link-Based Flows for your highest-value campaigns, and then experiment with recommendation strategies, promotional thresholds, audience segments, and messaging to identify the experiences that make it easiest for more visitors to become customers.