TYNSET, Norway and LONDON, December 12, 2019-- Duett AS ("Duett"), a leading provider of software-as-a-service ("SaaS") solutions to professional accountants and their clients in Norway, today announced it has received a majority growth investment from Accel-KKR, a leading global software-focused investment firm headquartered in Silicon Valley. The investment will build on Duett's deep success in Scandinavia to fuel vertical and geographic expansion plans. The investment also marks Accel-KKR's 39th completed investment in the EMEA region since 2013 when it established a European headquarters, making Accel-KKR one of the most active software private equity firms in Europe.