Amazon.com Inc. is investigating suspected data leaks and bribes of its employees as it fights to root out fake reviews and other seller scams from its website.

Autonomous driving technology could replace some 294,000 long-distance truck drivers over the next 25 years, a lighter impact than some have predicted but one that could still significantly reshape freight-industry employment, according to a new research paper.

Big trucking companies, scrambling along with their customers to keep up with fast-growing U.S. economic demand, are plowing millions of dollars into technology to build up services as digital freight middlemen.

Walmart Inc. has begun telling online shoppers that some products in its warehouses are “out of stock” after the retailer changed its e-commerce systems to avoid orders deemed too expensive to ship.