Peter Kafka

Recent Posts by Peter Kafka

“Cross-Device” Ad Tracker Drawbridge Rounds Up $6.5 Million From Sequoia, Kleiner Perkins

Drawbridge, an ad tech start-up founded by AdMob engineer Kamakshi Sivaramakrishnan, has raised $6.5 million from Sequoia Capital and Kleiner Perkins Caufield & Byer. Drawbridge says it can help marketers target potential customers by tracking them as they move around from device to device — like from a laptop to an iPhone. Sivaramakrishnan put in six months at Google after it acquired AdMob, before starting her own company.


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There was a worry before I started this that I was going to burn every bridge I had. But I realize now that there are some bridges that are worth burning.

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