It’s a crazy, multi-device world.

According to one report from Facebook, 60% of online adults in the U.S. and U.K. use at least two devices each day, meaning that mobile is at the epicenter of many brands’ marketing, sales, and product strategies.

This trend creates a window of opportunity for companies that are looking to reach audiences at multiple points in their buyer journeys. The challenge, however, is that mass-market tools and analytics technologies haven’t caught up—basic reports in Google Analytics only provide aggregate-level traffic data, for instance. It’s tough to dissect the steps that your audiences are taking to become customers and repeat customers.

Despite this lack of transparency, one concept holds tried and true: you’r...