20 million documents securely in the cloud: How AOK Niedersachsen transformed its output management with T Cloud Public

In this article, you will read,

• how Binect GmbH migrated AOK Niedersachsen to the cloud in a compliant and secure manner,
• which regulatory requirements a cloud platform must meet to process social and health data,
• and what measurable improvements were achieved in resolution times, availability, and scalability.

With more than 3 million insured members, 195,000 corporate customers, and over 30,000 contractual partners, AOK Niedersachsen (AOKN) is Germany’s seventh-largest statutory health insurance provider. In 2025, the health insurer is operating with a budget of more than EUR 17.3 billion across health and long-term care insurance.

AOKN places a strong emphasis on local presence. Its 7,200 employees serve insured members at more than 100 locations throughout Lower Saxony. At the same time, nonpersonal communication channels such as postal mail and email continue to play an important role. Many of these communications contain personal social or health data, including notices, benefit statements, and newly issued health insurance cards.

Binect GmbH is one of Germany’s leading business process outsourcing providers for output management. The company supports more than 20,000 users and handles over 100 billion mailings annually. Its roots date back to 2001, when it operated as pawisda systems GmbH, providing support and administration services for print centers.

Over time, Binect evolved from an ISV (independent software vendor) into a SaaS provider. Today, its suite of solutions consists of cloud-native, microservices-based applications that significantly simplify deployment and maintenance.

“We quickly recognized that outbound mail offers very large potential for rationalization. To address this, we developed output management software and the corresponding interfaces, which consolidated all letters from the branch offices on a central server and released them for printing,” reports Dr. Frank Wermeyer, Managing Director of Binect GmbH.

AOKN processes more than 20 million documents in over 16 million mailings each year through its output management system. Individual documents may contain personal, health, or social data—a volume that cannot be managed manually and that places stringent demands on the underlying infrastructure.

More than four years ago, the traditional operating model came under review. The catalyst was a standard investment decision: The existing hardware was reaching the end of its support lifecycle. “We had to consider purchasing new hardware and making the associated investments,” Angerstein recalls. “When Binect suggested delivering the service from the cloud, we began to explore the idea,” Angerstein explains. “Given the high level of protection required for the data, it was clear that a German cloud solution had to be our primary focus to ensure compliance with the legal requirements governing the processing of personal data. What is more, we also handle social and health data, which is subject to strict protection requirements in Germany.”

Binect GmbH identified T Cloud Public as the ideal platform for its cloud transformation as an ISV. Three factors proved decisive: hosting in Germany, a mature portfolio of cloud services, and comprehensive support for the regulatory requirements associated with processing social and health data.

Unlike large hyperscale cloud providers, T Cloud Public assigns customers a dedicated point of contact. For Binect, this role is fulfilled by Timo Adler, who provides direct communication channels and rapid responses. Even for complex requirements, the Binect team receives knowledgeable, personalized support—a person rather than a ticketing queue.

“T Cloud Public is not a ‘nameless cloud.’ With Timo Adler, we have a personal point of contact when it matters. We can rely on him,” emphasizes Kohl.

“Resolution times have been reduced from days to hours. The user experience has improved significantly. Overall, service availability, performance, and flexibility during load peaks have become much better.” - Sebastian Angerstein · Head of IT Project and Solution Management, AOK Niedersachsen

Beyond improved stability, Binect and AOK Niedersachsen have realized tangible cost benefits through the T Cloud Public pay-as-you-use model. The Enterprise Dashboard provides Binect with complete visibility into ongoing costs and supports proactive cost management.

The project's success has also enabled broader growth. Binect now operates more than 40 customer environments on T Cloud Public. AOK Niedersachsen served as the flagship implementation that demonstrated the viability of cloud services for highly regulated organizations.

“The deployment of the Binect suite became a lighthouse project for us in using cloud services. And we have not regretted taking this step,” concludes Meyer of AOK Niedersachsen.