Airbnb's corporate bookings are surging, fueled largely by technology companies and the academic sector, according to Concur.

Taking data from 320,000 expense filings totaling $77 million during the two years ended June 30, Concur reported that business travelers' second-quarter spending on Airbnb jumped 42% from a year earlier, while the number of organizations participating in Concur's expense-management program with Airbnb rose 32%.

Of the 20 organizations with the most Airbnb expense reports through Concur during the second quarter, eight were technology companies and six were universities.

San Francisco was the most common Airbnb destination for Concur clients for the two years ended June 30, followed by London, New York, Los Angeles, Paris, Austin and Seattle.

Concur launched its Business Travel on Airbnb service in the fall of 2014. The service enables Concur TripLink customers to reserve Airbnb inventory and capture the booking data.

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