Chris 正在为一项 B2B 推广活动设计衡量方案。其团队成员建议只追踪最后点击转化量，因为“领导层只关心这个”。Chris 应该怎么说？

In B2B marketing, the sales cycle is typically longer and involves multiple touchpoints across various channels before a conversion occurs. A last-click attribution model only credits the final interaction, failing to acknowledge the influence of earlier engagements like content downloads, webinars, or initial website visits that build trust and nurture leads over time. Therefore, a multi-touch attribution model is essential to accurately understand the full customer journey and the true impact of all marketing efforts. This comprehensive view helps optimize campaigns and allocate resources effectively, demonstrating how different touchpoints contribute to the final decision.