Excerpt from: Stiennon, Richard “From Hub-and-Spoke to Hybrid Networks,” Secure Cloud Transformation: The CIO’s Journey. IT-Harvest Press, 2019, pp. 68–82. ARCHITECT JOURNEY Siemens Global Network and Security Transformation Company: Siemens Sector: Conglomerate Driver: Frederik Janssen Role: Global Head of Infrastructure Revenue: $108 billion Employees: 360,000 Countries: 192 Locations: 2,200 Company IT Footprint: Siemens’ IT infrastructure covers 192 countries glob- ally. They serve 360,000 end users—employees—and another approximate- ly 70,000 external contractors. Its server and application landscape encom- passes 10,000 applications and around 60,000 servers. In addition to the 450,000 clients and internal/external employees, they manage approximately 200,000 mobil

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