The text discusses the importance of segmentation in marketing, particularly for B2B companies, highlighting a common oversight in retargeting efforts where generic strategies often prevail. It introduces Clearbit Reveal as a tool to address the issue of anonymous website visitors by identifying them through IP addresses and enhancing Google Analytics with rich firmographic data. The example of Outreach, a sales enablement software company, illustrates how Clearbit Reveal helps in segmenting website traffic by employee size, allowing for more targeted retargeting efforts. By focusing on high-value site visitors and personalizing ads based on specific attributes, companies like Outreach and Outshine have significantly improved their marketing performance, with Clearbit-guided campaigns outperforming others by 100% or more. The text emphasizes the shift from broad, generic retargeting to a more strategic approach that customizes ads according to specific segments, such as industry or technology use, enhancing both efficiency and relevance in marketing efforts.