Existing-home sales, which rose in November to the highest seasonally adjusted annual rate since January, are on track for their strongest year since 2006 as low mortgage rates and a robust job market drive up demand.

Amazon’s cloud-computing unit suffered a new outage, at least its third this month, spurring disruptions at other companies.

Amazon said all workers at its U.S. warehouses will have to wear masks again, a move prompted by the spread of the Omicron variant.

U.S. stocks rose, with the S&P 500, Dow and Nasdaq advancing 1%, 0.7% and 1.2%, respectively.

TikTok was the world’s most visited internet site in 2021, surpassing last year’s leader, Alphabet’s Google, according to Cloudflare.

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Appeared in the December 23, 2021, print edition.