The document discusses personalization as a key trend in online marketing in Russia. It provides examples of how personalization can increase key performance indicators like conversions, sales, and secondary actions. Personalization should be applied across the entire customer journey, from acquisition to retention. Specific data points like purchase history, demographics, and on-site behavior can be used to personalize content and messages. Case studies demonstrate how personalization techniques like targeted messages and offers can increase sales, prevent cart abandonment, and encourage referrals. The document advocates for testing different personalization strategies to motivate customers without irritating them.