This chapter briefly sketches the general concept of integrative promise, describing it as a pattern of invocation of explanatory virtues: in particular, integration, stringency, opportunism, and appeals to non-epistemic values. First, I defend the choice of the somewhat unusual term “explanatory virtue,” by comparison with appeals to other, more classic accounts of theoretical virtues, particularly those of Thomas Kuhn. I then situate integrative promise with respect to a number of other existing philosophical literatures which have treated similar subjects. Especially important is the concept of pursuit-worthiness, which has already been the topic of a significant amount of philosophical discussion. I also describe the relationship between integrative promise and the widely recognized theoretical virtues of fruitfulness and scope, and Mayo’s concept of severe testing.