Application Programming Interfaces (APIs) have been identified by the European Commission as a key enabler of interoperability among private and public undertakings. Moreover, a systematic adoption of open and standardized APIs by firms and developers appears to be crucial for unlocking competition and promoting the flourishing of Artificial Intelligence (AI) and Internet of Things (IoT) innovation.An analysis of the main European regulatory initiatives which have so far surfaced in the realm of data governance (right to personal data portability, free flow of nonpersonal data, access to customer account data rule, re-use of government data) reveals that the EU legislature is not tackling the matter consistently. While all of these initiatives share a reliance on APIs for the facilitation of a sound and effective data sharing ecosystem, they vary in terms of rationale, scope and implementation. Furthermore, data sharing via APIs requires a complex implementation process, and technicalities are crucial for their success. Moreover, an excessive reliance on fair, reasonable and non-discriminatory (FRAND) terms might be overestimated when it comes to data compensation, as has been demonstrated by the continuing saga involving standard essential patents.

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