Simo Ahava
Simo Ahava is one of the most respected technical experts in the Google Analytics and Google Tag Manager ecosystem. His work stands out because he explains complex tracking problems in a way that advanced practitioners can actually use, from data layers and custom templates to server side tagging, consent mode and debugging. He has influenced how thousands of analysts, marketers and developers think about reliable measurement, and his writing has become a reference point for people who need to understand not only how GA and GTM work, but why implementations fail. His strength is the rare combination of deep JavaScript knowledge, analytics architecture and practical education.