Growth marketing case studies: How brands are growing smarter with Criteo GO

The best growth marketing strategies aren’t built on theory. They’re built on results. While every business has unique goals, the challenges tend to look remarkably similar. Teams want to attract more customers, improve return on ad spend (ROAS), reduce the time spent managing campaigns, and continue growing without dramatically increasing advertising budgets.

That’s exactly why growth marketing case studies can be so valuable. They move beyond best practices and show how real businesses solved real problems, often uncovering ideas that other marketers can apply to their own strategies.

The following examples highlight how brands across industries have used Criteo GO, Criteo’s AI-powered advertising solution, to improve performance through automation, cross-channel reach, and commerce intelligence. While every business achieved different outcomes, several common themes emerge: less manual campaign management, smarter optimization, and measurable business growth.

What makes a successful growth marketing strategy?

Growth marketing is often associated with experimentation, but sustainable growth requires more than simply testing new channels.

The strongest growth strategies combine customer acquisition, retention, creative optimization, and performance measurement into a system that continuously improves over time. Increasingly, AI is becoming an important part of that process by helping marketers identify high-intent shoppers, optimize budgets automatically, personalize creative, and adapt campaigns in real time.

The case studies below demonstrate how those ideas translate into measurable business outcomes.

Agape Diamonds: Turning abandoned carts into higher-value customers

Luxury purchases often involve careful consideration, making cart abandonment one of the biggest challenges for jewelry retailers.

Agape Diamonds, a U.S.-based brand specializing in ethically sourced lab-grown and simulated diamonds, wanted to go beyond traditional retargeting. The company needed a way to attract new high-intent shoppers while encouraging existing visitors to return and complete their purchases.

Rather than adding more manual optimization, Agape upgraded its existing approach with Criteo GO. AI-powered campaigns automatically delivered personalized product ads across the open web and supported social channels based on real-time browsing behavior and purchase intent. At the same time, the company launched a dedicated new customer acquisition campaign, creating a full-funnel strategy that reached shoppers from discovery through conversion.

The results demonstrated the impact of combining automation with commerce-focused advertising:

• 20% increase in ROAS
• 20% increase in conversion rate
• 13% increase in average cart value

Read the full Agape Diamonds success story.

Wine Country Gift Baskets: Scaling holiday growth without sacrificing efficiency

Holiday shopping creates enormous opportunities for ecommerce brands, but it also creates intense competition.

Wine Country Gift Baskets had reached a point where increasing advertising spend risked reducing efficiency. The company needed to continue growing during its busiest season while maintaining strong ROAS, even as competition intensified.

Using Criteo GO as the foundation of a full-funnel strategy, Wine Country expanded beyond acquisition and retention campaigns by incorporating online video and social advertising into a coordinated cross-channel approach. AI continuously optimized bidding, audience targeting, and placements, allowing the company to scale without introducing unnecessary complexity.

The performance gains were impressive:

• 28% year-over-year improvement in ROAS
• 10% increase in average cart value
• 13% increase in advertising spend while maintaining efficiency

Read more about the campiagns Wine Country Gift Baskets ran to achieve this success here.

Suits Outlets: Scaling Revenue with Full-Funnel, Cross-Channel Advertising

Suits Outlets wanted to drive stronger results without adding more complexity to campaign management.

By using Criteo GO, the team brought key channels into one easier-to-manage setup, expanded its reach with video and Meta, and improved performance while keeping execution streamlined.

The results included:

• $300,000+ in revenue.
• 12% increase in ROAS.
• 5.4x return on new customers.

Different industries, similar patterns

While every business measures success differently, several recurring themes appear across Criteo GO customer stories. Some brands focus on customer acquisition. Others prioritize higher conversion rates, increased revenue, or greater advertising efficiency. Regardless of industry, many businesses report similar advantages after moving to AI-powered, cross-channel campaigns.

For example:

• Unice increased revenue by 66% while boosting sales and ROAS through AI-powered customer acquisition and conversion campaigns.
• Denon Store by Audio Forum doubled ROAS while dramatically increasing first-time buyer acquisition after adopting GO campaigns designed for growth with minimal manual management.
• Maison MRKT and Xirena achieved a 23% increase in ROAS during a side-by-side comparison with their previous strategy while also reducing campaign setup time from hours to minutes.
• TerabyteShop used GO campaigns to generate 100% revenue growth alongside a significant increase in clicks, demonstrating how AI-driven optimization can support rapid ecommerce growth.

Each story focuses on a different objective, yet they all reinforce the same principle: growth marketing becomes more effective when technology helps marketers spend less time managing campaigns and more time making strategic decisions.

What these growth marketing reveal about modern advertising campaigns

Looking across these examples, several consistent themes emerge. Successful brands aren’t simply increasing advertising budgets. They’re improving how those budgets are used by combining AI, automation, and commerce intelligence throughout the customer journey.

Common characteristics include:

• AI-powered optimization that continuously adjusts bidding and delivery.
• Cross-channel campaigns that reach shoppers beyond a single platform.
• Personalized creative based on shopping behavior and product interest.
• Faster campaign setup with significantly less manual management.
• Performance improvements measured through business outcomes such as ROAS, conversions, revenue, and customer acquisition.

Taken together, these capabilities help businesses create marketing programs that are both easier to manage and better equipped to grow over time.

Why growth marketing is evolving

Growth marketing has always been about finding sustainable ways to improve performance. What’s changing is how marketers accomplish that goal. As customer journeys become more fragmented and advertising channels continue to multiply, manually managing every campaign becomes increasingly difficult. AI is helping close that gap by automating repetitive work, identifying high-intent shoppers, generating creative assets, and optimizing campaigns continuously.

For growing businesses, that means sophisticated advertising capabilities are becoming accessible without requiring enterprise-sized teams or endless hours of manual optimization.

The brands highlighted here represent different industries and different business goals, but they all demonstrate how combining AI with a cross-channel strategy can produce meaningful, measurable results.

Frequently asked questions

Why should I look into growth marketing case studies?

Growth marketing case studies are detailed examples showing how businesses improved measurable outcomes such as revenue, customer acquisition, ROAS, conversion rates, or efficiency through specific marketing strategies. They help marketers understand not only what worked, but why. They also provide real-world evidence of how businesses have used a platform to solve common challenges. They can offer insight into campaign performance, implementation, scalability, and the types of results achieved across different industries.

What industries can benefit from AI-powered growth marketing?

Virtually any business that sells products or services online can benefit from AI-powered advertising. The examples highlighted here include jewelry, food and beverage, consumer electronics, fashion, and retail, demonstrating how case studies, in this case for Criteo GO, can adapt to different business models and customer journeys.

What do the most successful growth marketing campaigns have in common?

While every business has different goals, many successful campaigns share similar characteristics. They combine customer acquisition and retention strategies, use AI to automate optimization, reach shoppers across multiple channels, personalize creative, and continuously improve performance using real-time data.

Ready to explore more growth stories?

Every business highlighted here approached growth from a different starting point, but each found new ways to improve performance with Criteo GO.

To read the full stories behind Agape Diamonds and Wine Country Gift Baskets, and to discover how brands like these have grown with Criteo GO, explore our collection of customer success stories on our dedicated microsite.