Nicolai Geier is the chief product owner for private cloud and on-premise SAP S/4HANA Service. He has been working for SAP for nearly 26 years in different roles including development, consulting, and product management, with experience in SAP R/2, SAP R/3, SAP ERP, SAP CRM, and SAP S/4HANA. He has been in product management for SAP S/4HANA Service for almost four years.

Martin Lenz is a product expert in SAP S/4HANA Service, dedicated to designing innovative and impactful solutions for SAP customers. He thrives on close collaboration with business users and SAP engineering teams, transforming customer requirements into practical and future-ready service management capabilities. Since 2018, Martin has been driving the evolution of SAP S/4HANA Service, contributing to the strategic rebuilding of SAP’s in-house service and service sales processes. Leveraging a strong international customer network and extensive industry experience, he actively engages with the SAP community and is a committed member of DSAG.

Yang Li is the head of product management for SAP S/4HANA asset and service management, private cloud. With more than 18 years of experience in SAP S/4HANA Service Management, leading global product management team and responsible for S/4HANA asset and service management portfolio, turning strategy into competitive solutions with measurable customer outcomes. 

Noboru Ota is vice president and chief expert in product marketing for SAP Cloud ERP Private, based in SAP’s Paris office. Since joining SAP in 2002, he has held a range of international roles, including consulting in Australia and SAP S/4HANA solution management for service and asset management in Walldorf, Germany.

Gert Tackaert is a principal business process expert for SAP S/4HANA Service at SAP. He has more than 28 years of SAP service experience through work in consulting and product management. He works with key customers to understand their service processes and provide guidance to address the business challenges. During his time in product management, he was chief product owner for the SAP S/4HANA Service solution.