In the last two months Michael Marks has turned down a dozen offers to make keynote speeches at conferences. His company, construction startup Katerra, is three years old, but the attention surge is very recent. “Construction technology has gotten kinda buzzy,” he says. That may be. But more likely, interest in Katerra has spiked because in January, the company landed an astounding $867 million in venture funding led by the SoftBank Vision Fund.

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