How International Fashion Retailer Reduced Ad Spend by 39% While Improving ROAS

VogueMark, an international fashion retailer with 850 stores across 28 countries and a growing e-commerce operation, was spending over $200 million annually on digital advertising — and their CMO suspected half of it was wasted.

The Challenge

VogueMark's marketing team operated in silos. The e-commerce team ran programmatic campaigns through three DSPs. The retail team managed social and search independently. The CRM team handled email and loyalty. No one had a unified view of who was seeing ads, on which channels, and whether those ads drove incremental purchases.

The symptoms were clear:

• Frequency across channels was uncontrolled. A loyalty member might see the same product on Instagram, in a display ad, and in an email — on the same day.
• Retargeting pools were bloated. Site visitors who bounced after 3 seconds were retargeted for weeks alongside high-intent cart abandoners.
• No suppression existed for recent purchasers, meaning customers who bought a winter coat on Monday received ads for the same coat on Tuesday.
• Attribution was siloed, with each platform taking credit for the same conversion.

The Approach

VogueMark deployed Datadek in three phases over 90 days.

Phase 1: Unified Audience View (Weeks 1-3)

Connected all digital channels to Datadek's platform, creating a unified audience graph that deduplicated reach, normalized frequency, and attributed conversions across channels. The audit revealed that 42% of all paid impressions were served to existing loyalty members — customers who would have purchased anyway.

Phase 2: Precision Segmentation (Weeks 4-8)

The team built 48 audience segments combining first-party purchase history, loyalty tier, browsing behavior, and third-party fashion interest signals. Key segments included:

• High-value lapsed customers (2+ purchases historically, no purchase in 6+ months) with tailored win-back offers
• Category explorers (browsing a new category for the first time) with discovery-focused creative
• Cart abandoners with time-decayed retargeting (heavy frequency in first 24 hours, tapering to zero by day 7)
• Seasonal trend followers identified through social engagement and search behavior

Phase 3: Cross-Channel Activation (Weeks 9-12)

Segments were activated with global frequency caps and suppression rules. The team set up incrementality measurement using geo-matched holdout groups.

The Results (90 Days)

• 39% reduction in total digital ad spend with revenue remaining flat or slightly up
• 2.1x improvement in incremental ROAS as validated by geo-holdout testing
• 55% reduction in wasted impressions (defined as ads served to recent converters or existing loyalty members)
• 44% faster campaign launch cycle (from brief to live), enabled by pre-built segments
• $12.4 million annualized savings redirected to brand-building and new market expansion

What The Team Says

"Our media agency told us we needed to spend more to grow. Datadek proved we needed to spend smarter. We cut nearly 40% of our budget, grew revenue, and our CFO now asks about Datadek dashboards in every marketing review. The days of spray-and-pray are over."

The full case study methodology and segment definitions are available to qualified enterprise prospects.