  The International Virtual Observatory Alliance (IVOA) has developed and
built, in the last two decades, an ecosystem of distributed resources,
interoperable and based upon open shared technological standards. In doing so
the IVOA has anticipated, putting into practice for the astrophysical domain,
the ideas of FAIR-ness of data and service resources and the Open-ness of
sharing scientific results, leveraging on the underlying open standards
required to fill the above. In Europe, efforts in supporting and developing the
ecosystem proposed by the IVOA specifications has been provided by a continuous
set of EU funded projects up to current H2020 ESCAPE ESFRI cluster. In the
meantime, in the last years, Europe has realised the importance of promoting
the Open Science approach for the research communities and started the European
Open Science Cloud (EOSC) project to create a distributed environment for
research data, services and communities. In this framework the European VO
community, had to face the move from the interoperability scenario in the
astrophysics domain into a larger audience perspective that includes a
cross-domain FAIR approach. Within the ESCAPE project the CEVO Work Package
(Connecting ESFRI to EOSC through the VO) has one task to deal with this
integration challenge: a challenge where an existing, mature, distributed
e-infrastructure has to be matched to a forming, more general architecture.
CEVO started its works in the first months of 2019 and has already worked on
the integration of the VO Registry into the EOSC e-infrastructure. This
contribution reports on the first year and a half of integration activities,
that involve applications, services and resources being aware of the VO
scenario and compatible with the EOSC architecture.
