According to eMarketer forecasts, U.S. retail sales over the holidays will top $1 trillion for the first time this year — with ecommerce sales projected to climb to more than $135 billion.

And thanks in part to the compressed shopping season between Thanksgiving and Christmas, the annual crush in 2019 could be more pronounced than ever before: In addition to predicting an even higher amount for online sales ($143 billion), Adobe Analytics projected that online retailers would see $29 billion in[...]