b2b-marketing-automation
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Eunjoon Cho
Eunjoon (EJ) Cho is the co-founder and CEO of Tofu, a San Mateo AI platform that automates personalized, multichannel B2B marketing at scale. A Stanford PhD who trained speech-recognition neural networks at Google and worked at Meta, Affirm and Fast, Cho spent years mapping the generative-AI landscape before ChatGPT opened the door. He started Tofu with Honglei Liu and Elaine Zelby in 2023, raised about $17M from SignalFire, Index Ventures and HubSpot Ventures, and grew revenue 12x in roughly a year by replacing the bloated stack of point tools marketers juggle with one platform that ships finished assets.
Tofu
Tofu is an AI-powered, omnichannel marketing platform for B2B go-to-market teams. It consolidates the sprawling martech stack into one workspace, generating and repurposing hyper-personalized content across channels so enterprise marketers can launch integrated campaigns roughly 8x faster. Founded in 2023 and based in San Mateo, California, Tofu plugs into existing tools like HubSpot and Salesforce rather than replacing them.