SAN FRANCISCO  — Netflix added 8.8 million worldwide subscribers during its fourth quarter, surpassing expectations at a time when it faces heated competition from new streaming challengers such as Disney.

The development of ridesharing apps, such as Uber and Lyft, was made possible by 4G. With 5G, ridesharing cars could one day navigate themselves — no human driver required.

Google controls the way most of the world surfs the internet, with its Chrome browser accounting for more than half the global market. Now, it’s planning to get rid of the way companies and advertisers track Chrome’s millions of users.

Microsoft has ended support for Windows 7. That means it will no longer provide updates or security patches for the 11-year-old operating system, and the hundreds of millions of PCs still using it are vulnerable to attack.