In December 2021 the EU Commission published the Sustainable and Smart Mobility Strategy to strengthen the internal market and grant fair universal access to everyone. However, the Strategy does not provide for a comprehensive governance for this fundamental transformation. The aim of this article is to explore whether the EU’s current legal framework can regulate emerging disrupting phenomena as Mobility as a Service (MaaS) in the market of public transport. According to the Commission, the MaaS should be integrated within the transport network to enhance the accessibility to public transport. Thus, the first part of the article analyzes EC Regulation n. 1370/2007 on public passenger transport and the package of Directives regulating public procurement and the award of concessions. The second part of the article is dedicated to ascertaining whether shared micro-mobility, as a fundamental element of MaaS mobility, could be a service of general economic interest and the first solutions adopted by the Commission and by Member States regarding the integration in public transport.