The document summarizes Collections Trust and EC-funded Europeana Inside project. The project aimed to support the Digital Agenda for Europe by increasing the quantity, scope, and usability of data available to Europeana from European cultural institutions. It involved 26 participants from 10 countries who developed the Europeana Connection Kit, an open-source software toolbox, to simplify contributing data to Europeana and help overcome participation barriers. Over 30 months, the project added 960,000 records to Europeana through an iterative development and testing process.