AWS to Disconnect European Sovereign Cloud from Global Network on October 24

On October 24, 2026, Amazon Web Services (AWS) will conduct an unusual experiment: its European Sovereign Cloud will operate for several hours without a connection to the company's global private network. The test is intended to demonstrate that the European cloud infrastructure can continue functioning independently of AWS systems located outside the European Union.

The upcoming exercise raises an important question for Europe's cloud computing industry: how independent can a cloud service be when its parent company operates globally? For businesses, public institutions and organizations handling sensitive information, the answer involves much more than simply knowing where their data is stored.

What exactly will AWS disconnect?

The AWS European Sovereign Cloud is a separate cloud environment launched in January 2026, with its first region located in Brandenburg, Germany. Unlike conventional AWS regions, it was designed to operate independently, with infrastructure, operational management and technical resources located within the European Union.

Under normal circumstances, this infrastructure uses the AWS Global Network backbone, a private network connecting the company's facilities around the world. It also uses a dedicated system for transferring limited operational information between the European environment and other AWS systems. According to AWS, neither connection is essential for the European Sovereign Cloud to operate.

During the October 24 exercise, AWS will disconnect the European Sovereign Cloud from its global backbone and temporarily disable the system responsible for controlled operational data transfers. The test will be carried out by AWS personnel residing in the European Union, using the cloud's own hardware and software resources.

Will European cloud services go offline?

Despite the planned disconnection, AWS does not expect its European Sovereign Cloud services to become unavailable. The experiment will not affect other AWS regions or private connections through AWS Direct Connect.

Instead of using Amazon's global private backbone, the European cloud will route its network traffic through dedicated internet connections provided by European telecommunications operators. This means the infrastructure will remain connected to the public internet, even while separated from the AWS global backbone.

However, AWS acknowledges that customers could experience brief connectivity interruptions when traffic switches between network routes. These interruptions may occur at the beginning and end of the experiment while external networks update their routing information, a process known as network convergence.

Why is cloud sovereignty becoming so important?

Cloud sovereignty has become an increasingly important issue in Europe as governments and businesses seek greater control over their digital infrastructure. Storing information in a European data center does not automatically guarantee operational independence. Cloud services may still depend on management systems, technical support, software updates or network infrastructure located in other countries.

The AWS European Sovereign Cloud was developed to address some of these concerns. According to Amazon, customer content and customer-created metadata remain within the EU, while day-to-day operations are managed exclusively by EU residents. The company also maintains a local copy of the source code needed to support the environment's independent operation.

AWS says the October experiment is designed to provide verifiable technical and operational evidence aligned with the objectives of the European Commission's EU Cloud Sovereignty Framework and Germany's Federal Office for Information Security (BSI) C3A framework.

Does the experiment prove complete independence?

The test could provide important evidence of operational autonomy, but it is necessary to distinguish technical independence from broader questions of legal jurisdiction and corporate control. Even if the European Sovereign Cloud continues operating successfully without AWS's global infrastructure, Amazon remains a US-based company.

Furthermore, a controlled exercise lasting several hours cannot demonstrate how the infrastructure would perform under every possible long-term disruption. It can, however, verify whether the technical separation mechanisms work as intended under the specific conditions being tested.

For the European hosting market, the experiment highlights a wider trend: cloud providers are increasingly expected to demonstrate infrastructure resilience and operational independence rather than merely promise data residency within European borders.

For businesses choosing hosting or cloud infrastructure, the geographical location of servers is only one part of the decision. Administrative access, external technical dependencies, network connectivity and the ability to maintain services during disruptions are equally important considerations.

AWS plans to share information about the results with customers and regulators after the exercise. The outcome on October 24 could provide a useful practical benchmark for evaluating operational sovereignty in European cloud infrastructure.

Source: AWS Security Blog — AWS European Sovereign Cloud: Demonstrating an independent operation (September 28, 2026).