FedEx (NYSE: FDX) on Wednesday said it intends to acquire e-commerce platform ShopRunner for an undisclosed price, adding a new dimension to the shipping giant's growing rivalry with Amazon.com (NASDAQ: AMZN). ShopRunner is a membership program that offers free two-day shipping, free returns, and other benefits when members buy from one of its 100 retail partners. The benefits are similar to what Amazon offers through its Prime service. Image source: FedEx. The deal should bring FedEx closer to some of its biggest retail customers. FedEx president and chief operating officer Raj Subramaniam said the acquisition "aligns with our continued efforts to create an open, collaborative e-commerce ecosystem that helps merchants deliver seamless experiences for their customers." In a statement announcing the deal, FedEx said that ShopRunner's pre-purchase offerings complement FedEx's post-purchase logistics services. This isn't the first time FedEx and Amazon are bumping elbows. In recent years, the e-commerce giant has aggressively built its delivery capabilities, bringing in-house business that traditionally went to FedEx and other transport giants. Last June, FedEx declined to renew an Amazon contract for expedited delivery service, preferring instead to "focus on serving the broader e-commerce market." Later in the year, Amazon ceased using FedEx Ground for deliveries and temporarily barred third-party sellers from delivering Prime-eligible packages through FedEx's network. 10 stocks we like better than FedExWhen investing geniuses David and Tom Gardner have a stock tip, it can pay to listen. After all, the newsletter they have run for over a decade, Motley Fool Stock Advisor, has tripled the market.* David and Tom just revealed what they believe are the ten best stocks for investors to buy right now... and FedEx wasn't one of them! That's right -- they think these 10 stocks are even better buys. See the 10 stocks *Stock Advisor returns as of November 20, 2020 John Mackey, CEO of Whole Foods Market, an Amazon subsidiary, is a member of The Motley Fool's board of directors. Lou Whiteman owns shares of FedEx. The Motley Fool owns shares of and recommends Amazon and FedEx and recommends the following options: long January 2022 $1920 calls on Amazon and short January 2022 $1940 calls on Amazon. The Motley Fool has a disclosure policy.Source