EghtesadOnline: When Wal-Mart Stores Inc bought online retailer Jet.com for $3 billion last year, it marked a crucial moment - the world's largest brick-and-mortar retailer, after years of ceding e-commerce leadership to arch rival Amazon, intended to compete.

EghtesadOnline: Wal-Mart Stores Inc. is overhauling its e-commerce team and elevating executives from its recently acquired Jet.com business, aiming to better challenge Amazon.com Inc. with more selection and lower prices.

EghtesadOnline: Wal-Mart Stores Inc, vying to better challenge Amazon.com Inc, will pay about $3 billion for internet retailer Jet.com and its innovative pricing software in the largest-ever deal for an e-commerce startup.