 NORTH CANTON, Ohio, June 29, 2021 PRNewswire -- Sparkasse Hannover has elevated its customer experience, reduced costs and improved efficiency since outsourcing its self-service fleet and transferring the entire IT management and operations of its 450 ATMs to Diebold Nixdorf Managed Services. As a top German savings bank, Sparkasse Hannover has pursued a customer-centric, omnichannel approach to banking services across its 100 locations. 