The poster children of the so-called sharing economy - Uber and Airbnb - are now mainstream corporate travel suppliers says a detailed report into US business travellers' expense claims by Certify.
But the most impressive percentage growth comes from accommodation booking app HotelTonight.
The 1000%+ growth over the year for HotelTonight is impressive, although the study likes to deal in percentages rather than volumes so the actual number of room nights is not disclosed.
But the average room rate of $207.19 can be compared, to a degree, with traditional hotels.
In the fourth quarter, Marriott was the most expensed hotel brand at an average of $241.46 per night, higher than HotelTonight although the latter's figure is across the entire year. Holiday Inn on the other hand came out much cheaper for road warriors in the fourth quarter at $180.86.
Elsewhere, the findings around Airbnb show that it has grown 259% year-on-year, with US business travellers starting to consider Airbnb for international stays.
Without volumes or average rates, the actual Airbnb footprint in the corporate travel world compared with other stay options is difficult to gauge.
As for Uber, it has recorded quarter-on-quarter growth for all of 2015, with Q4 representing a tipping point in that it accounted for a higher percentage of expense claims than the car rental firms across the US.
Click here to read Certify's release.
NBImage by Shuttersotck