By: Michael Jones, RetailMeNot The tinsel has been taken down and the trees have been put away. Retailers made it through another holiday season—some more successful than others—and most are looking forward to the challenges and successes that 2016 will bring. Looking back on 2015, deemed “The Year of Mobile,” it’s clear that digital marketers began to understand how new technology would impact the shopper’s journey, both online and in-store. So, what’s the challenge for 2016? Better execution of mobile and cross-channel strategies. At least that’s my challenge to retailers.