Digital transformation at ZDF: Public TV Reinvented as a Streaming Service
Published on March 19, 2025


ZDF needs to adapt its digital offerings to meet the new generation's expectations in a rapidly changing media landscape. As a long-time digitalization partner, JAKALA supports the public broadcaster by future-proofing its core digital products, such as their streaming offerings and their news portal ZDFheute.
Taking over experience design, operations and development, introducing a new architectural concept, and implementing agile processes have significantly increased the speed and development quality. This strengthens ZDF's position as a digital beacon and enables a holistic, personalized user experience across all platforms.
Context & Challenges

Our approach and solution

Technologies
Mobile applications, user interfaces for various devices, Content Management Systems (CMS), middleware, modern video streaming backends, service-oriented streaming architectures, Java-based service architectures, Google Cloud Platform (GCP), Apigee for API management, Progressive Web App (PWA), GraphQL Federation, and test automation tools (Selenium, Appium, Trakr).

Results
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01
Preparation for the introduction of a new CMS and performance optimization using new middleware
Implementing the new Content Management System (CMS) required careful planning and preparation to ensure smooth integration and migration of existing content. Doing so enables more efficient content management and delivery across various ZDF platforms. Additionally, developing and introducing a specially tailored middleware resulted in significant performance improvements. It replaced multi-layered architecture and optimized content delivery by being the connecting layer between the new CMS and end-user platforms. The outcome: a seamless user experience.
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02
Complete refactoring of GCP resources
Comprehensive refactoring of Google Cloud Platform (GCP) resources enables more efficient use of cloud services. The optimization of CI pipelines and the introduction of Argo CD as a declarative GitOps CD tool for Kubernetes improved the security and reliability of ZDF services. Using the latest cloud technologies ensures robust infrastructure protection against potential threats and increases fail-safety.
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03
Touchpoint Innovation: Spanning Web, Native Apps, and Smart TV.
The web presence is being redeveloped as Progressive Web Apps (PWAs), providing users with an app-like experience directly in their web browser, including offline use and faster loading times. This redevelopment significantly improves accessibility and user-friendliness. The native apps for platforms like iOS and Android are also being completely rebuilt from the ground up, with a focus on intuitive user navigation, high performance, and the integration of modern features. This provides users with an optimal viewing experience and comfortable navigation through the diverse content of ZDF. This is rounded off by Smart TV applications on the 'Big Screen,' ranging from Apple TV (tvOS) to Android TV.