Improve Digital has produced a Market Map of the European online display advertising sector in an attempt to clarify roles of the various industry players, and the relationships between them. We would like to thank our clients, partners, and consultants for their continued collaboration on this project, which is driven by popular demand. The creation of the Ecosystem Map is inspired by the success of the US version (created by LUMA Partnets LLC) and the acknowledgement that the European equivalent has not yet been developed.