growth is primarily being driven by consumers using their mobile devices, phones and tablets, to acquire goods and services. According to eMarketer estimates
, retail e-commerce sales reached $2.3 trillion in 2017, a 23.2 percent increase over the previous year. The mobile share of this stood at 58.9 percent, or $1.4 trillion. In 2021, mobile e-commerce could rake in some $3.5 trillion and then make up almost three quarters (72.9 percent) of e-commerce sales.