T-Systems MMS | 11,447 followers on LinkedIn. T-Systems MMS supports large corporations and medium-sized companies in their digital transformation. The digital service provider breaks new ground with its customers and develops sustainable business models in the areas of Industrial IoT, Customer Experience, New Work and Digital Reliability. With around 2,100 employees at nine locations and annual revenues of €200 million in 2021, T-Systems MMS offers dynamic web and application management and ensures the highest software quality, accessibility and IT security with an accredited test center.