This document discusses Europeana's aggregation infrastructure and plans to innovate it. It notes that Europeana currently gets content through 150 aggregators representing over 2,300 organizations. 76 of Europeana's 113 direct providers are also aggregators. The document reviews Europeana's aggregator model and survey, and discusses concepts like national aggregators, data flow, and expert hubs. It provides CulturaItalia as an example and compares Europeana's model to the Digital Public Library of America's hub approach. The document outlines plans through the Europeana DSI project to develop requirements for a new aggregation infrastructure with aggregator input.