Case studyAnonymised client
The result
Reliable, compliant return-on-ad-spend visibility restored.
Client
Digital marketing agency
Challenge
Fragmented, non-compliant conversion tracking across a HubSpot subdomain and a sprawling WordPress site.
Work
Rebuilt the consent-to-tracking pipeline end to end.
Capabilities
Untangling a tracking setup four specialists couldn’t agree on
Atom Digital rebuilt a digital marketing agency’s conversion tracking after a fragmented, multi-specialist attempt at server-side tracking left consent signals, Google Tag Manager and HubSpot all out of sync.
The outcome
Tracking parameters now pass through correctly and compliantly into HubSpot contacts, giving the client reliable visibility into return on ad spend for the first time.
What the rebuild corrected
- Cookie consent fed into Tag Manager correctly
- Tag Manager uses the consent signals it receives
- Tracking parameters passed through to HubSpot contacts
- One owner across all four domains
How it was done
The situation
The agency needed ongoing support across Google Ads, Microsoft Ads, Google Tag Manager, GA4, server-side tracking and HubSpot — with tracking split awkwardly across a HubSpot-hosted subdomain and a separate, sprawling WordPress site.
Incomplete and non-compliant at the same time
The agency had already attempted server-side tracking for Enhanced Conversions themselves. It hadn’t worked: cookie consent wasn’t feeding into Tag Manager correctly, and Tag Manager wasn’t using the consent signals it did have to pass data through to HubSpot properly. The result was tracking that was both incomplete and non-compliant.
Diagnosis and decisions
The root cause wasn’t technical difficulty. It was fragmented ownership. A different specialist owned each piece: the PPC side, Tag Manager, server-side tracking, HubSpot. None of them owned the whole stack, so the pieces never quite fit together. The fix needed someone who understood all four domains at once.
One owner, from consent through to the CRM
Atom Digital rebuilt the pipeline from consent through to HubSpot, correcting how cookie consent fed into Tag Manager, and how Tag Manager used those signals to pass tracking parameters back into HubSpot contacts, compliantly and completely.
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