Notes from the server side
Technical posts on first-party data collection, server-side tagging, attribution, and the mechanics of running a collector inside your own VPC.
17 Apr 2026 · 9 min read
Understanding Safari ITP: why your 7-day cookies are breaking attribution (and how to fix it)
Safari Intelligent Tracking Prevention caps client-set cookies at 7 days. If your attribution window is longer than a week, you are losing conversions you will never see. Here is what actually happens and how server-set cookies solve it.
Safari ITPfirst-party cookiesattribution16 Apr 2026 · 7 min read
Meta CAPI Event Match Quality: what actually moves EMQ from 5 to 9
Meta grades every Conversions API event on how well the identity parameters can match a known Meta user — the EMQ score. Here are the parameters that actually move the number, in the order they matter most.
Meta CAPIEMQserver-side tagging15 Apr 2026 · 5 min read
Why I built Datafly Signal
A short founder post on why a server-side first-party data collection platform that lives inside the customer’s VPC needed to exist, and why no existing vendor had built it.
founderphilosophy