Summary As proposed in the Cloud and AI Development Act (CADA), the EuroCloud Federation is explicitly designed not as a standalone infrastructure project, but as a cooperative mechanism that leverages existing EU digital foundations. The proposal integrates with the Simpl (Smart Networks and Services Joint Undertaking) ecosystem and the Common European Data Spaces to avoid duplication. Article 34 establishes the federation to facilitate the sharing of public-sector data centre and cloud computing services, mandating the reuse of existing infrastructure rather than building from scratch. By integrating with these established building blocks, EuroCloud would aim to reduce fragmentation, lower costs, and accelerate the deployment of sovereign cloud capacity across Member States.

Detail

The Cloud and AI Development Act (CADA), as set out in COM(2026) 502 final, proposes a structural shift in how the European public sector accesses and shares cloud computing resources. A central pillar of this shift is the EuroCloud Federation, established under Article 34 of the proposed Regulation. The primary objective of the EuroCloud Federation is to facilitate the sharing of public sector data centre services and cloud computing services between Union entities and public sector bodies. However, the proposal is careful to position EuroCloud not as a "greenfield" infrastructure build, but as a layer of cooperation that builds upon existing EU digital infrastructure, notably the Simpl initiative and the Common European Data Spaces.

Reuse of Existing Infrastructure and the Simpl Connection

The CADA proposal explicitly states that the Cloud and AI Leadership Initiatives (which support EuroCloud) should leverage outcomes from relevant European digital infrastructure consortiums, including shared infrastructure and common standards developed under initiatives like Simpl. The Explanatory Memorandum notes that the proposal aims to "bridge the gap between the Union's advanced research and innovation capabilities and their sustainable exploitation" by supporting the establishment of the EuroCloud Federation.

Simpl, a Joint Undertaking under Horizon Europe, has already been tasked with developing sovereign and secure cloud infrastructure, focusing on edge computing, distributed cloud, and interoperability standards. By referencing these existing consortia, CADA ensures that EuroCloud does not duplicate efforts. Instead, Article 34(3) mandates that the Commission shall establish a platform for the EuroCloud Federation. This platform is intended to provide a catalogue of available services and a service platform for the exchange and orchestration of computing, storage, and network resources.

The architectural implication for CTOs and architects is that this platform would likely interface with or be built upon the technical standards and reference architectures already validated by Simpl projects. This approach ensures that the "building blocks" of sovereign cloudβ€”such as secure identity management, interoperable APIs, and standardized data formatsβ€”are already in place, reducing the technical debt and integration risks for Member States joining the federation. The proposal emphasizes that the Cloud and AI Leadership Initiatives should "support the establishment of the European public-sector cloud federation" while leveraging existing networks, ensuring that the federation acts as a unifying layer over pre-existing technical achievements.

Integration with Data Spaces

The relationship between EuroCloud and the Common European Data Spaces is equally strategic. The CADA proposal aligns with the broader Data Union Strategy, which seeks to create a secure and interoperable single market for data. The Explanatory Memorandum highlights that the proposal is consistent with the Data Act and aims to foster the development of a "smart and secure middleware cloud platform for common European data spaces."

EuroCloud facilitates this by enabling the sharing of idle cloud and data centre capacity among Member States. This sharing is governed by Article 35, which outlines the conditions for sharing public sector data centre services. Crucially, the proposal emphasizes that this sharing should be anchored in public-sector cooperation, governed solely by considerations of public interest. By providing a federated layer for compute and storage, EuroCloud would act as the infrastructure backbone that allows Data Spaces to function efficiently across borders.

For instance, a Data Space in healthcare may require secure, sovereign compute capacity to process sensitive health data. EuroCloud would allow a Member State with surplus sovereign capacity to share this with another Member State that lacks it, without the need for the latter to build new physical infrastructure. This integration ensures that Data Spaces are not just data-sharing agreements, but are underpinned by tangible, scalable, and sovereign computational resources. The proposal notes that the Cloud and AI Leadership Initiatives should "support the development of a smart and secure middleware cloud platform for common European data spaces," directly linking the federation's infrastructure role to the data governance goals of the Data Spaces.

The Role of Article 34(3) and Platform Integration

Article 34(3) is the operational core of this integration. It requires the Commission to establish a platform for the EuroCloud Federation that provides: (a) a catalogue providing information on available public sector data centre services and cloud computing services; and (b) a service platform for the exchange and orchestration of computing, storage, and network resources and services.

This platform is not envisioned as a monolithic cloud provider. Instead, it is a federation mechanism. The impact assessment accompanying the proposal notes that EuroCloud takes account of existing building blocks, including Simpl and Data Spaces. This means the platform would likely adopt open standards and interoperability protocols already defined in these initiatives. For architects, this implies that integration with EuroCloud would require adherence to these emerging EU-wide standards for cloud orchestration and service discovery. The platform would facilitate the technical orchestration needed to seamlessly move workloads between different sovereign cloud providers within the federation, ensuring that the "multi-cloud" strategy recommended in Article 29(9) is technically feasible and manageable.

Strategic Implications for Sovereignty and Efficiency

By building on Simpl and Data Spaces, EuroCloud addresses two critical challenges: sovereignty and efficiency. The proposal argues that the current landscape is characterized by a pronounced dependence on third-country providers. EuroCloud would mitigate this by pooling EU-based sovereign capacity. The reuse of existing infrastructure accelerates this process, allowing Member States to gain access to sovereign compute resources immediately, rather than waiting for new data centres to be built. Furthermore, the cost-recovery model described in Article 36 ensures that the administration of the federation is sustainable, with fees levied to cover the costs incurred by the Commission and the sharing entities. This economic model, combined with the technical reuse of Simpl and Data Space foundations, creates a viable pathway for reducing dependencies while maximizing the return on existing EU digital investments.

What this means for you

For CTOs and architects, the integration of EuroCloud with Simpl and Data Spaces means that future sovereign cloud solutions in the EU would likely be federated and standardized. You should prepare your organizations to adopt open standards for cloud orchestration and service discovery, as these would be critical for interoperability within the EuroCloud platform. Evaluate your current cloud infrastructure for compatibility with emerging EU reference architectures, particularly those related to edge computing and secure identity management, which are core outputs of Simpl.

For SMEs, the EuroCloud Federation presents a significant opportunity. By aggregating demand and sharing capacity, EuroCloud would aim to lower the barriers to entry for European cloud providers. SMEs that offer sovereign cloud services or specialized middleware for Data Spaces may find new markets within the federation. Additionally, the proposal encourages the use of open-source solutions and open standards (Article 41), which aligns with the cost structures of many SMEs. You should monitor the development of the EuroCloud platform's catalogue, as it may become a key channel for discovering and procuring sovereign cloud services.

For public sector bodies, the practical impact is a shift from direct procurement of cloud services to participation in a federated sharing model. This could reduce costs and improve access to high-quality sovereign infrastructure. However, it also requires a change in procurement strategies and technical capabilities to manage multi-cloud environments effectively. Engaging early with national strategies and the EuroCloud Federation would be essential to ensure your organization can leverage these shared resources effectively.

Common misconceptions

Misconception 1: EuroCloud is a new EU-owned cloud provider. EuroCloud is not a single cloud provider or a new data centre built by the EU. It is a federation and a platform for sharing existing sovereign cloud and data centre capacity among public sector bodies. It relies on the infrastructure owned by Member States and their designated providers, not on new EU-built hardware.

Misconception 2: EuroCloud replaces Simpl or Data Spaces. EuroCloud does not replace Simpl or Data Spaces; it complements them. Simpl focuses on research, innovation, and standardizing sovereign cloud technologies. Data Spaces focus on data sharing and governance. EuroCloud provides the compute and storage infrastructure layer that enables these Data Spaces to function securely and efficiently across borders. They are interdependent building blocks of the EU's digital sovereignty strategy.

Misconception 3: Participation in EuroCloud is mandatory for all public sector bodies. Participation in the EuroCloud Federation is voluntary. Article 34(1) states that the Federation is open for participation on a voluntary basis. However, the broader CADA framework does impose obligations on public sector bodies to use sovereign cloud services with specific assurance levels (Article 30), which may incentivize participation in EuroCloud to access such services.

Official sources

Related

This is general information about a draft EU regulation, not legal advice.