1:https://www.oracle.com/cn/cx/marketing/digital-marketing/
2:https://zhuanlan.zhihu.com/p/413353946
3:https://www.mckinsey.com.cn/%E6%95%B0%E5%AD%97%E5%8C%96%E8%90%A5%E9%94%80%EF%BC%9A%E4%B8%8D%E6%AD%A2%E4%BA%8E%E5%8D%96%E8%B4%A7%E5%93%81%E7%89%8C%E5%88%B6%E8%83%9C%E4%B9%8B%E7%AD%96%E7%B3%BB/
4:http://www.eeo.com.cn/2022/1014/562210.shtml
5:https://www.thepaper.cn/newsDetail_forward_22084896