  Aiming to support a cross-sector and cross-border eGovernance paradigm for
sharing common public services, this paper introduces an AI-enhanced solution
that enables beneficiaries to participate in a decenntralized network for
effective big data exchange and service delivery that promotes the once-only
priority and is by design digital, efficient, cost-effective, interoperable and
secure. The solution comprises (i) a reliable and efficient decentralized
mechanism for data sharing, capable of addressing the complexity of the
processes and their high demand of resources; (ii) an ecosystem for delivering
mobile services tailored to the needs of stakeholders; (iii) a single sign-on
Wallet mechanism to manage the transactions with multiple services; and (iv) an
intercommunication layer, responsible for the secure exchange of information
among existing eGovernment systems with newly developed ones. An indicative
application scenario showcases the potential of our approach.
