什麼是成效增幅？

Lift measurement is a method used to determine if an advertising campaign is the primary cause of a change in user behavior, such as increased sales or conversions. It isolates the impact of the ad campaign by comparing the behavior of a group exposed to the ads with a control group that was not. This helps advertisers understand the true incremental value of their campaigns. The other options are incorrect because: "near real-time attribution" describes a different type of measurement focused on immediate impact, not causal inference; "testing different creative variations" refers to A/B testing or creative optimization, not lift measurement; and "a rough simulation" is too broad and doesn't accurately capture the scientific, controlled nature of lift studies.