[[abstract]]How do firms explore new technologies? Several recent studies have indicated that alliance networks influence firms’ exploration in technology. There are two perspectives to the effects of alliance networks on technological exploration. One views that bridging as the primary drivers of technological exploration (Burt, 1992), and the other argues that technological exploration is driven by cohesion (Coleman, 1988). Although each perspective highlights a key aspect of technological exploration, bridging and cohesion are not necessarily mutually exclusive. Greater insight may be derived from the joint consideration of both perspectives. Moreover, our study distinguished that the firms can explore the technologies outside from two ways: one is the exploration from the existing alliance partner (also namely exploration from friends); the other is the exploration from the firms which are not the alliance partners (also namely exploration from strangers). However, the dual face of exploration has not been examined theoretically and empirically. Two key questions remain to be addressed: How do a firm’s alliance networks contribute to its dual face of exploration? How do their impacts differ?