Signal loss
The umbrella term for measurement getting harder: third-party cookie restrictions, shortened browser storage lifetimes, consent refusals, and platform privacy changes, all reducing the share of activity that can be observed and attributed.
Why it matters
It is the reason first-party data and offline conversion import stopped being advanced techniques and became the baseline. What used to be visible in the browser now has to be carried deliberately.
What goes wrong
The phrase is used loosely enough to be a sales tool, so it is worth being specific about which loss you actually have. Missing click identifiers, unconsented traffic and expired storage are three different problems with three different fixes, and a vendor selling a cure for all three at once is usually selling one of them.
Next to this
- Consent ModeGoogle's mechanism for adjusting how its tags behave according to the consent a visitor has given, and for modelling some of the conversions that consent refusals make unobservable.
- Google tag gateway for advertisersGoogle AdsNewServing Google's tag scripts and measurement requests through your own domain and first-party infrastructure, configured through a CDN, load balancer, web server or server-side tagging setup, rather than loading them from Google's domains.
- Enhanced conversions for leadsGoogle AdsMatching an offline conversion to an ad click using hashed first-party data, usually an email address, rather than a click identifier.
The rest of this step
Measure this on your own data
The diagnostic reads a CRM export in your browser and reports your volume, your match rate and the spread between your leads against the thresholds in this glossary. Nothing is uploaded and no account is needed.