Notes on tracking, from inside the container.

Guides on Google Tag Manager, server-side tagging, Consent Mode and GA4, written by the two people who set these up for clients every week. Some are fixes we keep repeating, some are the longer explanations we wish we could send instead of a call.

Written by Jerry and Angelica. Prefer video? The same topics on YouTube.

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The four we send most often

01How to track website data without violating user privacy in 2026Where the line is between useful measurement and a fine, and how consent-native tracking sits on the right side of it. 02Why Google Consent Mode v2 is no longer optionalWhat changes for EEA and UK advertisers, and what a correct advanced implementation looks like. 03Fix "Failed" or "Still Running" tags in GTMThe four causes, in the order we check them: ad blockers, consent timing, triggers and the request itself. 04Google Tag Gateway and CloudflareWhat the first-party gateway does, what it doesn't, and when it's worth putting in front of your tags.

Everything else is below, newest first.Browse all posts

Notes on tracking, from inside the container.

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Google Analytics vs Google Tag Manager in 2026

Mastering Generative Engine Optimization

How to Configure Microsoft UET Consent Mode

Why Google Consent Mode v2 is No Longer Optional (And What You Must Do About It)

Top 5 Tracking Mistakes That Are Wasting Your Ad Budget

GA4 vs Universal Analytics: What Marketers Need to Know

Is Your Marketing ROI Disappearing in 2025?