Google’s decision to switch display ad impression measurement from count-on-download to begin-to-render methodology, effective February 2027 across Ad Manager and AdSense, is set to reshape how brands, agencies and publishers think about digital media performance. Under the new standard, an impression will only be counted once a creative has successfully loaded and started rendering, not merely when it begins downloading. This IMPACT feature explores what that shift means in practice, featuring Mihir Mehta, Managing Partner at 0101.Today, who clarifies that a lower reported impression count will not necessarily mean lower media consumption but a stricter counting standard, and cautions against comparing 2027 CPM benchmarks with 2026 benchmarks since a methodology change could otherwise be mistaken for media inflation. The piece also examines the implications for publishers, noting that page speed, creative load time and rendering efficiency are set to become active media planning variables alongside audience scale and content quality. A must-read for any marketer or agency trying to separate a change in the numbers from a genuine change in performance.
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