That means deals on everything from TVs to phones, computers, tablets and toys from the biggest retailers around.
Smartphones are expected to account for a large portion of online sales revenue, projected to be more than $2 billion, according to the firm.
Stores offer better deals on laptops, desktops and gaming computers on Cyber Monday than Black Friday and also lower prices for accessories, she said. It's possible an item may cost more at Target than Walmart and still be cheaper because you don't have to pay shipping if you don't meet the minimum.
Attention Target shoppers, there's a pretty wide deal that covers much of, but not all of, the mega-retailer's products.More news: Here Are The Best Black Friday Gaming Deals We've Spotted
Shop at Target for 15% off: Target is offering 15% off hundreds of thousands of items on its website. As of 7 a.m. PST on Cyber Monday, online shoppers have spent $531 million.
If you buy a new model of iPhone through Walmart for the normal price, you'll receive a $300 Walmart gift card.
Black Friday is one of the most advertised shopping holidays of all time.
Cyber Monday is expected to generate $7.8 billion in sales, up almost 18 percent on previous year, which would make it the biggest online shopping day in the United States, according to Adobe Analytics. Check theAmazon Cyber Monday page for their full range of live deals. Shop any later than that, though, and you may not be able to find what you're looking for.