From Feasibility to Operation Q&A

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From Feasibility to Operation: Scaling Data Spaces with Simpl-Live 

This session explored the experiences of data spaces implementing Simpl‑Open, with support from Simpl‑Live, highlighting lessons learned, challenges encountered, and practical outcomes.

The interlinking layer of EMDS (European mobility data space) connects also non-dataspace platforms to the dataspace on a meta data level. Is SIMPL connect also non-dataspace dataplatforms to dataspaces?

Yes; Simpl can connect “non-dataspace” actors (e.g., open data platforms, databases, initiatives, service providers) to a data space, typically by having them onboarding as participants via the Simpl agents. Practically, this means they can publish/discover metadata, apply trust/policy controls, and interoperate with other participants without needing to “become a data space” themselves.

What's the plan in Simpl- Live to support the selected data spaces implementation and how do you engage with its stakeholders e.g. for EOSC?

Simpl-Live moves from feasibility to execution through structured implementation phases that validate assumptions, align scope and dependencies, and progressively deploy Simpl-Open components. There is no single standard plan applied to all data spaces; each integration is tailored to its maturity, technical architecture, and roadmap constraints.

For example, the Simpl-Live implementation phase of EOSC starts in February 2026, and requires tight coordination and early agreement on federation roles and responsibilities, which makes its alignment more complex than in other cases.

Did you also include desirability and viability aspects in your feasibility studies? With what conclusions so far?

Partially. The studies primarily focused on the analysing  fit-gap, requirements and integration roadmaps based on existent documentation of the data spaces. Desirability/viability elements were captured indirectly through stakeholder priorities and constraints (adoption drivers, sovereignty concerns, cost sensitivity, readiness). A recurring conclusion was that interoperability and federation drive desirability, while operational cost, complexity, and missing roadmap items can threaten viability unless implementation support (planned during the Simpl-Live Implementations) and clear governance/operating models are in place.

What exactly was the scope of the ‘Green Deal’ feasibility study?

GDDS scope was to assess how Simpl-Open could be integrated into GDDS (in a Common European Data Space context) by analysing the current GDDS readiness, identifying gaps, and proposing a feasibile integration approach and roadmap. A known constraint was that GDDS had limited architecture/process documentation during the Feasibility Study analysis, so parts of the analysis relied on workshops, preparatory materials, and explicitly documented assumptions/limitations.

Can you explain in layperson terms what does it mean to “integrate” Simpl in a data space? You're taking it for granted! 🙂

It means plugging Simpl’s modules when feasible to support the creation of the common european data spaces, so participants can: 

  1. Identify and trust each other
  2. Publish and find data/services
  3. Enforce usage rules/policies
  4. Share (data, applications, infrastructure) resources securely while preserving full control over these resources.
Where does Simpl end and the data space start? What are the typical services that a data space operator needs to organise for themselves?

Simpl-Open is the middleware SW used as technical enabler of a data space; it is designed to support standard business processes of a data space (e.g. Setting up a Governance Authority, Setting up the data space rules, Onboarding Data Space Participants, Onboarding End Users, Resource Publication / Discovery / Consumption, Contract Negotiation, Logging, Monitoring, Reporting, Auditing, Cross data space federation etc.). With Simpl-Open, any association of two or more organizationa can create a data space by integrating it with their existing infrastructure.

The data space operator needs to define the governance, management and operation rules to be configured in Simpl-Open to allow the data space to function as desired. Simpl-Open provides extensive documentation guiding the data space operators in what is required to configure the data space processes in line with the data space rules. Examples of elements to be provided / defined by the entity operating / governing the data space: metadata schema; ontology; onboarding templates; contract templates; terms and conditions for joining the data space; identity attributes etc. 

Can you elaborate on the Simpl-business model? What are the key costs and revenues, and who will pay for what? Who will govern these capital-flows in the federated system?

Simpl-Open is the open-source technical enabler of a data space / initiative. The business model, costs, revenues, capital flow management are all attributes of the data space / initiative adopting Simpl-Open. 

When can we expect the feasibity study of the agricultural data spaces to be finalized ?

Based on the working cadence and the end-of-contract target we discussed, the expectation is finalisation by end of February 2026, assuming reviews close on time. Work is still ongoing and there is no concrete dates on when the report may be publicly available.

What (kind of) entity will in the end be the owner of Simpl and what governance model will be applied to govern it?

N/A - we are not in position to answer.

Possible example: At a generic level, Simpl could to be governed through a European governance structure (rulebook + accountable governance body), where a mix of variants of known EU entities frameworks could be responsible (EU entity, MS-driven EDIC, association, regulatory rulebook, expert group). For now, Simpl is governed by the European Comission and managed by DG Connect.

How is Simpl-Open help you to enable Cross-Domain interoperability?

N/A - we are not in position to answer.

Possible example: By standardising the technical foundations of data spaces: common ways to identify actors, publish/discover resources, apply policies, and support federation across multiple data spaces. Cross-domain becomes feasible when different domains rely on the same interoperable baseline “rules + mechanisms + Technology”, even if their domain semantics differ.

If the European landscape is dominated by SME’s, shouldn’t they be made leading in the governance, in stead of a very bureaucratic ‘hybrid governance’ system as explained

N/A - we are not in position to answer.

Possible example: SME's can create associations and establish their own data space based on their own rules, as Simpl-Open is a configurable open-source product. SMEs should absolutely be strongly represented and empowered. In addition, the “hybrid” governance is not a bureaucracy; it’s a mean to ensure consistent trust, compliance, and interoperability while allowing decentralised operations.

Have you considered a lighter version of Simpl with lower resource requirements? Currently, deployment seems quite demanding, which can be a barrier for universities, research institutes, or small organizations that would like to join.

It has been considered, as this comes up often as an adoption barrier, but not yet planned.

Why choosing a centralized governance model for a decentralized (federated) solution? Can you explain the disadvantages of applying a fully decentralized governance too?

Simpl-Open is primarily designed to enable a data space of multiple participating organizations with a central governance authority, which can be established by the participants themsleves. Additionally, Simpl-Open enables federation of multiple data spaces, allowing participants in one data space (based on well defined federation rules) to be automatically recognized / trusted in the other data spaces and operate in that data space within the boundaries set through federation configurations. 

Did the feasibility studies also answer behavioral or economic questions, like related to data ownership, incentives and other benefits or threads for users to share data, lack of skills or knowledge, etc

End users who own data are managed internally by their respective organisations. This internal governance process is outside the scope of Simpl-Open.

Simpl-Open provides interoperability, identity and trust, catalogue, policy/contract enforcement, monitoring, and billing/invoicing mechanisms that enable organisations to share resources (data, applications, infrastructure) in a controlled and auditable way. It does not replace internal organisational user management.

Can you share the feasibility studies?

The specific feasibility studies will most likely not be shared publicly but with the relevant stakeholders only. However, a Consolidated  Feasibility Study Report is expected to be developed and shared on the Simpl Website. This Consolidated Report will contain a summary of the results of each specific feasibility study, and common aspects, such as: [1] common requirements from Simpl-Live selected data spaces; requirements to be considered for Simpl-Open further developments; conclusions and recommendations.

How the question on the near-real time data or real-time data is addressed by Energy Data Space? What place Simpl can have there?

Near-real-time use cases typically require specialised data pipelines and operational constraints (latency, reliability, streaming), Simpl-Open can support (near) real-time data sharing through by adding relevant extensions to the data plane of its EDC component. Simpl’s role is usually to provide the trust, identity, policy enforcement, catalog/federation and accountability layer around those exchanges; while the real-time data plane may remain UseCase-specific. In other words: Simpl can enable who can access what, under which rules, across which federated parties, even when the transport is real-time.