The MeetingMarket service was initially introduced in Germany in early-2016, as a move by the travel giant to capture some of the MICE end of the travel industry.
NH has quietly been adding the white label version of MeetingMarket to 24 hotels in Germany, six months after Best Western also signed up with 200 properties.
Expedia has previously said the creation of MeetingMarket is not immediately about tapping into the so-called mega conference sector, but targeting events of less than 30 people.
The new line of business is one that Expedia sees as untapped one so far for the group, with MICE global representing $400 billion of the $1.4 trillion travel market.
Expedia estimats that 66% of business meetings happen in a hotel and usually with a hotel room attached.
The average meeting size is in the 12-person region and with an average booking value of €2,000.
The ambition now is to ratchet up the service internationally and add multi-language capability.