What are GA4 key events (conversions)?

ROI answers

GA4 key events, or conversions, are specific user actions on your website that you deem valuable to your business – think a completed purchase, a form submission, or a phone call initiated. As of early 2026, GA4 uses these events to measure your marketing return on investment and optimise your campaigns for better results.

  • Enhanced Measurement: GA4 now features automatic event tracking for common interactions like page views, scrolls, outbound clicks, and site search, reducing the need for extensive manual setup.
  • Custom Event Creation: You can define custom events tailored to your specific business goals, such as a user downloading a brochure or watching a product demo video.
  • Conversion Modelling: GA4 utilises machine learning to model conversions, even when tracking is incomplete due to privacy regulations or user consent choices – crucial given increasing privacy concerns in Australia.
  • Integration with Google Ads: Seamless integration allows you to import GA4 conversions directly into Google Ads, optimising your paid campaigns based on real user behaviour.

In 2026, Australian businesses must be particularly mindful of the evolving digital privacy landscape, including ongoing updates to the Privacy Act. GA4’s privacy-centric design and modelling capabilities help navigate these complexities while still providing valuable data insights. Current systems include consent mode, which adjusts GA4 tracking based on user cookie preferences, ensuring compliance.

Instead of navigating the intricacies of GA4 event tracking and conversion modelling yourself, let ROI.com.au handle the technical details. We can take care of all this for you. Contact our team today to discuss how we can optimise your GA4 setup and drive measurable growth for your business.


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