I spoke with Firefox's head, Ajit Varma, about why the company is returning to fundamentals after years of decline.

Silent bugs don’t crash your app. They can turn your users away silently. Discover the 5 software testing tools U.S. teams use to find and fix issues before they reach production.

The instinct, in the first 30 days, when you inherit a failing program, is to start fixing things immediately. In my ...