This paper considers the relationship between subjective, multidimensional measures of international strategic alliance (ISA) performance and predictors of success both before the alliance is formed (pre-alliance formation factors) and during the operation of the alliance (post-alliance formation factors). The empirical study, based on a web-survey, investigates a sample of Danish partner firms engaged in 48 equity joint ventures and 70 non-equity joint ventures with partners from around the world. A multi-dimensional operationalization of alliance performance measurement is utilized in order to capture both process and outcome aspects of alliance performance. The results show a significant relationship between alliance performance and host country risk as well as partner reputation preceding alliance formation. During the operation of the alliance, relationships between collaborative know-how, trust, protectiveness, complententarity, cultural distance and alliance performance were found. (C) 2007 Elsevier Ltd. All rights reserved.