A relatively small Walmart rule change caused a big stir, highlighting the tension the surging e-commerce business is creating for retail workers.

From its cheap store-brand items to frequent discounts, a trip to Walmart offers many ways to save money at the grocery store, yet you might wonder if shopping on its website could be even better.

Walmart partially reversed recent instructions to stores regarding the carts used to fill online orders. The new rules prioritize safety over volume.

Walmart and Amazon race to win over rural America with speedier deliveries ...