Jeremy 正在为新的推广活动做准备，并花了一些时间复盘过去的推广活动。在启动新项目之前复盘过去的推广活动，其主要优势是什么？

Reviewing past campaigns before launching a new one significantly increases the chances of success by leveraging historical performance data. This allows you to identify what worked well (e.g., effective messaging, audience targeting, ad formats) and what didn't, enabling you to optimize strategies for the new campaign. While ensuring target customers see ads repeatedly can be part of a strategy, it's not the primary advantage of reviewing past campaigns. Reviewing past campaigns doesn't guarantee a reduction in ad budget, as some successful strategies might require similar or even increased investment. Finally, no marketing activity can guarantee immediate lead generation; success is built on informed strategy and execution.