https://www.cnbc.com/2017/12/26/amazon-celebrates-biggest-holiday-as-prime-members-surge.html

It's just the day after Christmas, but Amazon is already boasting about a successful holiday season, calling 2017 the "biggest" ever.

The e-commerce giant said Tuesday morning that customers were shopping on its website at "record levels" throughout November and December, and over the course of one week, more than 4 million people became Prime members or started a free trial, sending Amazon's membership count to new highs. However, the company didn't provide a specific membership total.