Serko Ltd., a New Zealand-based travel and expense management company, has acquired InterplX Inc., a provider of software as service (SaaS) expense management solutions in the US. Darrin Grafton, CEO of Serko, said the investment is an important part of Serko’s global growth strategy and would extend its end-to-end travel and expense offering. He said the acquisition augments the company’s worldwide support centers with global 24/7 support. InterplX provides business expense management solutions, including cloud-based expense reporting, expense auditing services and payment processing to a range of organizations including several Fortune 500 clients. It was founded in 1994 and is headquartered in Minneapolis. InterplX will continue to be run by its founder Chuck Buckner and the existing management team, who will now report to Serko’s vice president of North America, Tony D’Astolfo.