Esker provides electronic data interchange (EDI) services. Esker first announced its acquisition plans in October 2016.
E-Integration offers numerous EDI services to automate order processing, e-invoicing, logistics, procurement and other business-critical processes.
Over 7000 companies around the globe are currently connected via the online platform.
The acquisition will enable Esker to further expand its growth in Europe and increase its sales in Germany by over 150 percent.
The customer base expands by 600 existing customers. Esker also acquired a 20 percent stake in E-Integration's Promitea business, a cloud-based application that will continue to be managed by the main shareholder.