This workshop in the fourth in a series that started in summer 2011 to investigate Federated Identity Management (FIM) for scientific collaborations. The first workshop was held at CERN in June 2011 (https://indico.cern.ch/event/129364), the second at RAL in November 2011 (https://indico.cern.ch/event/157486) and the third at ISGC in February 2012 (https://indico.cern.ch/event/177418). Through these workshops, several research communities have converged on a common vision for FIM, enumerated a set of requirements and proposed a number of recommendations for ensuring a roadmap for the uptake of FIM is achieved.
 These points have been documented in a paper (https://cdsweb.cern.ch/record/1442597) for which comments are welcome (https://cdsweb.cern.ch/record/1442597/comments).
 
An objective of this workshop is to gather feedback from the research communities on the recommendations and roadmap described in the paper with the intention of endorsing the common vision. The organisational and financial aspects of ensuring a common FIM will also be addressed.