Within a year, two federal judges declared the tech giant a monopoly in search and ad technology. The tide may be turning for antitrust.

“The market for social networks, or even what Meta is, is very different now than it was even a couple of years ago.”

In her second day on the stand of a landmark antitrust trial over Meta’s power, Ms. Sandberg, the former chief operating officer, also said the company faced plenty of competition from TikTok.

The ruling was the second time in a year that a federal court had found that Google had acted illegally to maintain its dominance.

The day before the visit by Jensen Huang, lawmakers in Washington said they were investigating whether the chipmaker’s sales in China violated U.S. rules.

Mark Zuckerberg’s political ideology and tastes have evolved. His real estate portfolio reflects the shift.

Two reporters spent over a month compiling and analyzing information about the reams of data the U.S. government collects about Americans.

The company also introduced a new tool that helps computer programmers use chatbots when writing code.

China’s success in artificial intelligence has the Trump administration and lawmakers weighing rules and investigations to slow Beijing’s progress in the industry.