  The potential of Edge Computing technologies is yet to be exploited for
multi-domain, multi-party data-driven systems. One aspect that needs to be
tackled for the realization of envisioned open edge Ecosystems, is the secure
and trusted exchange of data services among diverse stakeholders. In this work,
we present a novel approach for integrating mechanisms for trustworthy and
sovereign data exchange, into Multi-access Edge Computing (MEC) environments.
To this end, we introduce an architecture that extends the ETSI MEC
Architectural Framework with artifacts from the International Data Spaces
Reference Architecture Model, accompanied by processes that automatically
enrich Edge Computing applications with data space capabilities in an
as-a-service paradigm. To validate our approach, we implement an open-source
prototype solution and we conduct experiments that showcase its functionality
and scalability. To our knowledge, this is one of the first concrete
architectural specifications for enabling data space features in MEC systems.
