What Amazon’s Fortune 500 rise teaches about experimenting beyond the core business

Amazon appears poised to take the top spot on the Fortune 500, edging out Walmart for the first time in more than a decade. It’s a symbolic changing of the guard in corporate America, writes my colleague Phil Wahba in this must-read feature.

For years, the rivalry between Amazon and Walmart looked like a fight over retail: e-commerce versus stores, software versus logistics, disruption versus incumbency. But Amazon’s rise to the top of the Fortune 500 points to a deeper leadership lesson...