Infor, a portfolio company of Summit Partners and Golden Gate Capital, has entered into an agreement to acquire GT Nexus for $675 million. Serving approximately 25,000 businesses, GT Nexus provides a global order management system that coordinates commerce across partners. Its cloud-based platform allows retail, fashion and manufacturing companies to collaborate with suppliers to manage and optimize shipments to customers, distribution centers and retail outlets to meet demand. Infor is a supplier of ERP software. The deal is expected to close within 45 days.