With 122 million Americans expected to shop online Monday, there's little peace for retailers, inluding Amazon.
The company hopes to top the 23 million orders it took in last Cyber Monday.
Amazon's brick and mortar rivals are offering online deals as well, trying to build on Black Friday momentum that saw internet retail sales crack $3 billion for the first time.
Walmart and Target report 60 percent of online purchases over Thanksgiving weekend were made from smart phones and tablets.
"Consumers are shopping differently, they're much more aggressive now, particularly on mobile," notes the National Retail Federation's Matthew Shay.
Fed Ex, UPS and the United Postal Service say that together they're bringing on a total of 185,000 temporary workers to help deliver those online holiday purchases.