Advent International, a private equity firm, completed the acquisition of a minority stake in Mediusa, a provider of cloud-based accounts payable automation solutions. Financial terms were not disclosed. “Finance professionals are starting to recognize the savings and efficiencies that AP automation can deliver, as well as its ability to reduce costly mistakes and eliminate fraudulent payments. As a result, we anticipate strong growth in this segment of the fintech market. We were also impressed by Marlin’s partnership-oriented culture and success achieved to date and believe Medius is uniquely positioned to become the category defining global business for the mid-market,” Douglas Hallstrom, Advent Director.