This question originally appeared on Quora: When should A/B testing not be trusted to make decisions? Answer by Edwin Chen, Ex: math and linguistics at MIT, speech recognition at Microsoft Research, ...

In today’s fast-paced digital landscape, where user expectations are constantly evolving and competition is only a click away, building successful products is no longer about guesswork or intuition—it ...

Testing out solutions is a core part of the design process, and on the web, that often happens in the form of A/B testing: Designers show one group of users design A, another group of users design B, ...

A/B testing is nothing new. It has been a staple of direct marketing campaigns for decades: Before the web, it was catalog mailers and infomercials; since coming online, it’s been used for improving ...

How can we innovate in the huge, $140 billion foreign aid sector? The same way we do in the private sector: routine evaluations of what’s working well and what isn’t. Yet donors rarely measure the ...

A/B testing has become a popular way to evaluate everything from website design to online offers to product descriptions. But many managers don’t design these experiments carefully, relying on ...

The small but crucial difference is that Duolingo doesn’t use A/B testing–giving different users slightly different online experiences for the purpose of testing–to sell more consumer products or ...

As we shift more of our computing to mobile devices and applications, there’s also a need for a new crop of tools that help developers better build, design and test their creations, which are also ...

What makes a good headline? Over-the-top superlatives? Clever wordplay? Eye-popping numbers? Newsrooms grapple with this question on a daily basis. Headline writing is an art, a careful balance of ...

A/B testing and gamification are two techniques claimed to deliver value for marketers. Do we know enough to make them work well for us? As we've been tweaking and fixing the inevitable bugs, flaws ...