Abstract: A method and system for selecting a resource. The resource system receives resource requirements that indicate target attributes of a target resource that is desired. The resource system receives offers to provide candidate resources to fill the resource requirements in an auction environment. Each candidate resource has candidate attributes that specify the characteristics of the candidate resource. The resource system generates a match rating for each candidate resource that indicates how closely the candidate attributes match the target attributes. The resource system then uses the match ratings to select a candidate resource whose candidate attributes best match the target attributes.