Web traffic on mobile phones and tablets is increasing to the point where firms must optimize for these touchpoints. Native mobile apps aren't always necessary because organizations can support a high percentage of mobile needs via the mobile Web. But optimizing for the mobile Web isn't a simple task. Responsive web design (RWD) takes center stage in many enterprise discussions about mobile — but comes with hype and confusion in tow. eBusiness professionals need to understand RWD's complexity in order to decide when they should leverage it to meet their customers' mobile needs.