https://techcrunch.com/2018/07/17/walmart-enlists-microsoft-cloud-in-battle-against-amazon/

Once a seemingly unstoppable retail juggernaut, Walmart’s been scrambling to define its digitally in this Amazon-defined era. This morning, the company announced that it’s struck a five-year deal with Microsoft, Amazon’s chief cloud competitor.

These sorts of partnerships are a regular occurrence for AWS — in fact, it announced one with Fortnite maker Epic Games, just this morning. The companies involved tend to put on a big show, in return for a discount on services, but Walmart and Microsoft are happily playing into the concept of teaming up to take on Amazon.