Walmart is closing three of its US technology hubs, a company spokesman confirmed to Insider.  As part of the office closures, hundreds of workers either will have to relocate to one of Walmart's other tech hubs, like those in San Bruno, California, and Walmart's HQ of Bentonville, Arkansas, or take severance and leave the retailer, company spokesman Rob Munroe told Insider. "Our decision to be together more frequently anchors to Walmart's fundamental belief that our people make the difference, our culture matters and we build stronger partnerships when we are physically together," Munroe said