Expensify CEO David Barrett likes dissing corporate booking tools, and seems to consider travel management his competition. He proudly opines that expense will "eat" corporate travel.

Expensify for the most part has ignored traditional enterprise sales as it targets the end user with its expense app. Popular with startups and "unicorns," Expensify recently signed Yahoo and its 12,000 users, showing a desire to move up market. That means RFPs and long sales cycles, and starts to look like Concur.

Barrett is vocal about how Expensify is different from Concur. He jumped on the latter's acquisition by SAP with . . .

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