Predictive analytics applies statistical algorithms and machine learning to historical data to make probabilistic forecasts about future events — such as which leads are most likely to convert, which content topics will trend, or when a customer is likely to churn. In digital marketing, predictive analytics powers lead scoring, audience segmentation, budget allocation, and campaign optimization. Tools like GA4 include predictive metrics (purchase probability, churn probability) that help marketers prioritize their highest-value opportunities.