This post is by Tomasz Tunguz from Tomasz Tunguz
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Tien is the founder and CEO of Zuora , and was formerly CMO and CSO at Salesforce. He is a brilliant marketer and created the notion of the three doors to SaaS success. He spoke about this innovation at a recent CMO summit; the video is here. If you visit Zuora’s website, you’ll see Zuora’s three doors along the top of the page: Subscription Economy, Why Zuora & How It Works.