Interactions have changed in which industries operate in relation to one another, and many industries are now interdependent in digital platform ecosystems (DPE). Today considerable interest in academic literature surrounding ecosystems and the industry actors' part of it that exchanges value through complementary offerings. New emerging services are dependent on complementary services from actors that operate in digital platform ecosystems. This is now happening in the transport industry with the emerging concept of mobility as a service (MaaS). MaaS is seen as a possible solution to the challenges such as sustainability issues imposed on the transport industry. It is meant to use a digital interface and shared data to efficiently source and manage the provision of transport-related services that meet the mobility requirements of society. However, research has shown that weak governance will possibly have a destructive character on emerging ecosystems such as the MaaS - DPE. Therefore, there is a need to develop more profound knowledge about governance to ensure the functionality of the MaaS digital platform ecosystem (MaaS-DPE). In this master thesis, this is done through an exploratory study, identifying the governance mechanisms that could be leveraged to motivate, recruit, and further retain MaaS-DPE participants, thus, ensuring the functioning of a MaaS-DPE. This is in the context of suburban cities on the west coast of Sweden where these actors are operating. We found three general and four specific governance mechanisms that we argue can be leveraged by the DPE leader visualized in a model connected to the roles of the DPE participants.