Same-day delivery gets a lot of media play, but many retailers and restaurants struggle to see the viability of offering this service as a long-term business model. Aside from logistical and operational challenges, key questions include "Will customers use it?" and (more importantly) "Are they willing to pay for it?" This report helps retail digital business professionals understand the realities of same-day delivery, including the requirements (and challenges) to execute successfully. This report is an update of research published in early 2015.