Digital marketing works closely with how people think and act. It studies what people need, what catches attention, and what builds trust. For example, clear messages and simple designs make it easier for people to understand and decide. Reviews and social proof can influence choices because people trust others' experiences. Timing also matters, like showing ads when someone is already searching for a solution. Understanding these patterns helps create better messages. It is more about people than tools. What behavior patterns seem most important to understand?