SD Worx, a European payroll and HR services provider, agreed to acquire Aditro, a cloud HR & payroll software provider. Financial terms were not disclosed. “For SD Worx, this is a unique opportunity to enter the Nordics market and to cover Finland, Norway and Sweden.. Both the employees and customers will benefit from the integration of Aditro into SD Worx. The decision to acquire Aditro was driven by our complementary geographies, business strategies, product portfolios and fundamentals as well as our shared cultures and value," Kobe Verdonck, SD Worx CEO.