Mistake: one tracking domain for all traffic sources

Mistake: one tracking domain for all traffic sources

Failure mode: you route push, native, and search through a single tracker domain. One aggressive campaign gets the domain flagged, and every campaign on that domain dies at once — including your clean ones.

Fix — checklist:
— Run separate tracking domains per risk tier: one for whitelist/search, one for grey traffic, never mixed.
— Keep a warm spare domain provisioned and pointed at the tracker, ready to swap in minutes.
— Use a CDN proxy in front so a domain swap does not require touching every campaign link.
— Never put your main brand domain in the chain — burn risk is real and irreversible.
— Monitor each domain's reputation; a sudden drop in click-through often means a flag before traffic fully stops.

Verify: confirm each tier resolves on its own domain and a swapped domain propagates without breaking existing clickid matching.

Save this SOP. Run this before every launch.