Santa has some competition. According to Amazon, the 2016 holiday season was its best yet, with more than one billion items shipped worldwide, according to a report from Reuters.

Many of the orders placed on Amazon during the holiday season came from mobile devices — 72 percent, according to the company. The busiest shopping day of the year on the ecommerce platform was Monday, Dec. 19 — the last Monday before Christmas.

According to Retail Metrics, Amazon Prime customers — who benefit from two-day free shipping on many items available through Amazon — spend twice as much as other consumers using Amazon.

Making the news even better for Amazon is the fact its own products sat atop its best sellers for the record-breaking season. The voice-controlled Amazon Echo speaker and its smaller counterpart, the Amazon Dot, both were among the top-selling products shipped by Amazon leading up to the holidays.

While Amazon hasn’t released sales figures for the devices, the company did confirm there were nine times more sales of devices running the company’s voice assistant Alexa than during last year’s holiday season.

"Despite our best efforts and ramped-up production, we still had trouble keeping them in stock," Jeff Wilke, chief executive of Amazon's worldwide consumer division, said in a press release.

An analysis by Morningstar suggested between four and five million Amazon-made, voice-controlled devices have been sold since the Echo speaker was first introduced in late November 2014 to a limited group of Amazon Prime customers. Consumer Intelligence Research Partners estimated 5.1 million sales of Echo devices since launch.

Outside of its own products, other top sellers on Amazon during the holiday season included a 72-pack of Keurig K-Cups, the Finding Nemo sequel Finding Dory from Pixar, Samsung’s Gear VR virtual reality headset, and the Pokémon Sun and Pokémon Moon games for the Nintendo 3DS.