2.5X ROAS and 78% Lower CAC in 6 Weeks for a Fast-Growing D2C Fashion Brand
A fast-growing house of fashion brands with $100M in revenue eliminated 40% data loss, unlocked 60-day conversion tracking, and transformed ad performance — all within six weeks.
The challenge
This fast-growing house of fashion brands — an online retailer with $100 million in annual revenue and 365 employees — was scaling aggressively across paid channels. But the data infrastructure could not keep pace with growth.
The core problem was 40% data loss across platforms. Ad blockers, browser privacy restrictions, and client-side tracking fragility meant that nearly half of all conversion events never reached the ad platforms. The downstream effects were severe: Meta, Google, and TikTok were optimizing campaigns on incomplete signals, leading to inflated customer acquisition costs and inaccurate audience targeting.
Without reliable conversion data, the marketing team was making allocation decisions in the dark. ROAS calculations were unreliable because they were based on partial attribution. CAC appeared inflated because conversions were being undercounted. And revenue was being left on the table — audiences that should have been retargeted were invisible because their sessions were not being connected across visits.
40% data loss
Nearly half of conversion events were lost to ad blockers, ITP, and client-side tracking failures.
Inflated CAC
Undercounted conversions made acquisition costs appear higher than reality, distorting budget allocation.
Missed revenue
Returning visitors were invisible after 7 days, killing retargeting effectiveness and personalization.
The solution
Ingest Labs deployed two platform capabilities that directly addressed the brand's data loss and identity gaps.
Ingest IQ replaced the brand's fragile client-side tracking with server-side data capture. Events were collected at a first-party endpoint and forwarded server-to-server to Meta, Google, and TikTok via pre-built Conversion APIs — bypassing ad blockers entirely. Data collection improved by 26%, and match quality between tracked events and ad platform identifiers increased by 20%, giving campaign algorithms the signal density they needed to optimize effectively.
Ingest ID introduced consistent visitor identification across all channels and sessions. Using a durable, server-set first-party cookie (MPID), the platform extended the conversion tracking window from the browser-imposed 7-day limit to 60 days. Returning visitors were no longer treated as new users — their full journey was visible, enabling true cross-session attribution, accurate retargeting audiences, and reliable customer journey analysis.
Results
| Metric | Before | After Ingest Labs |
|---|---|---|
| Data capture rate | ~60% (40% loss) | 26% improvement |
| Ad platform match quality | Degraded by data gaps | 20% improvement |
| Return on ad spend | Baseline | 2.5X |
| Customer acquisition cost | Inflated | 78% reduction |
| Conversion tracking window | 7 days (ITP limit) | 60 days |
| Data accuracy | Incomplete | 100% |
| Privacy compliance | Fragmented | 100% compliant |
What the data unlocked
True CAC calculation
With complete conversion data flowing to every ad platform, the brand could finally calculate accurate customer acquisition cost across all touchpoints — not just the ones that survived ad blockers.
Enhanced attribution models
60-day identity persistence enabled multi-touch attribution that captured the full customer journey, replacing the fragmented view imposed by 7-day cookie limits.
Advanced audience segmentation
Higher match quality and complete event data enabled precise audience segments for optimized ad spend and targeting — reaching the right customers instead of spraying broadly.
Customer journey analysis
Consistent visitor identity across sessions unlocked effective retargeting, revealing the actual paths customers take from first touch to purchase.
A fast-growing D2C fashion brand went from 40% data loss and inflated CAC to 2.5X ROAS, 78% lower acquisition costs, and 60-day conversion tracking — in just six weeks, with 100% data accuracy and full privacy compliance.
Ready to fix your data gaps?
See how server-side tracking and identity resolution can transform your ROAS and CAC.