Google Analytics 4 certification is a free credential offered through Google Skillshop that proves you understand GA4's event-based measurement model, reporting interface, and analysis capabilities. The exam is 50 questions, you need 70% to pass, and it's untimed. You can retake it immediately if you fail, though Google recommends studying their official learning path first. The certification covers GA4 fundamentals like events and parameters, custom dimensions and metrics, Exploration reports, audience building, and cross-platform tracking. It also tests your understanding of the differences between Universal Analytics and GA4, which matters because UA stopped collecting data in July 2023. Expect scenario-based questions about configuring tracking, interpreting reports, and troubleshooting common setup issues. The credential is valid for 12 months, after which you need to recertify. This makes sense because Google ships GA4 updates constantly—the interface you learned six months ago may have new features or moved menus by the time you renew. At Ottawa SEO, we require team members handling client analytics to hold current GA4 certification. It's not a substitute for real-world experience, but it ensures everyone speaks the same language when discussing conversion tracking, attribution models, or debugging tag fires. The exam itself takes most people 60–90 minutes if they've used GA4 in production. Be aware the certification focuses heavily on the GA4 interface and Google's preferred workflows. It won't teach you GTM implementation nuances, server-side tagging architecture, or how to audit data quality—those come from hands-on work. If you're running a 500-domain portfolio like ours, you'll encounter edge cases the exam never mentions, like tracking across subdomains with different CMSs or reconciling GA4 data with CRA-compliant e-commerce records. Start with Google's official GA4 course in Skillshop, spend two weeks using GA4 daily if possible, then take the exam. If you're already running GA4 for clients or your own properties, you can likely pass without formal study, but the course fills in conceptual gaps most practitioners skip.