This Is Why Digital Retail Matters: Mobile Sales Will Exceed $252 Billion by 2020

That's a 119% lift from this year

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Purchasing on smartphones and tablets will grow from $115 billion this year to $252 billion by 2020, according to a Forrester Research report released today. That represents a 119 percent increase during the next five years for mobile commerce.

The Cambridge, Mass., researcher said wireless phones will generate 15 percent of e-commerce sales by 2020, while tablets will generate 33 percent in the same time frame. Retailers, in particular, have started to lean into the mobile, Forrester reported, as 77 percent of merchants have built mobile-optimized sites. 

So, it's no wonder that Facebook and Mondelez appear to be focused so intently on digital commerce. B. Bonin Bough, vp of global media and consumer engagement for the snack company, recently proclaimed his expectations. 

"Very quickly we believe that Facebook will become our No. 1 food-selling channel," he said. 

@Chris_Heine Christopher Heine is a New York-based editor and writer.