The TI includes many highly integrated components: complex public key infrastructures (PKI) used for digital encryption and signatures, wide area networks (WAN) designed for secure data transmission over long distances, data center services, and software development and distribution. All components and services are quality-assured and operated in Arvato Systems' German data centers. In addition, a unique security management system was developed and implemented for the overall security of the TI. Within this framework, Arvato Systems is responsible for developing, setting up, and operating the central infrastructure services and environments, such as the central network with infrastructure services, public key infrastructures (PKI), and other central services in terms of end-to-end responsibility (online rollout (stage 1), lot 3). Furthermore, the connection of the KV-SafeNet backbone as an example for existing networks of the service providers is part of the order.