They knew TikTok was working. They just couldn't prove it and that was costing them.

A Gen Z streetwear brand with a genuinely organic following - built on drops, community, and a real point of view. Post-iOS 14, their attribution had fractured. Platform numbers and real business outcomes had stopped agreeing, and the CFO had started vetoing spend increases marketing believed in.

The team wasn't wrong about TikTok. They were just unable to prove it. Marketing had conviction, finance had spreadsheets, and neither could talk to the other. The result: a slowdown with nothing to do with market demand - and everything to do with internal trust in the numbers.

Restore measurement confidence. Give marketing a model finance could interrogate. Unlock the spend increase that was already justified, just unproven.

Implemented server-side tracking (pixel + CAPI) across Meta and TikTok - moving from pixel-only to a setup where significantly more conversions are actually captured and attributed correctly. Built a blended MER model and ran a proper holdout test on TikTok: paused it for a cohort of regions and measured the real demand impact. The results proved TikTok was driving far more than the pixel alone showed. Brought the data to the board. The CFO approved the budget.

• Went from tracking ~40% of real conversions to ~85% - via server-side (CAPI) implementation giving cleaner, more complete data
• TikTok spend approved to 3× after holdout results
• DTC revenue grew 52% over the following 9 months
• First board presentation where marketing and finance worked from the same model

"The argument had been going on for eight months. We settled it in six weeks. I wish we'd done it sooner - we lost time." - CMO