Most companies derive mobile apps from their websites, but Taco Bell has done the opposite. Building on the success of its e-commerce mobile app, the chain has revamped and renamed its website, extending the ability to order and pay via personal computers and tablets as well as enhancing the overall digital customer experience.

While e-commerce sales have been growing, year-to-year declines in conversion and add-to-cart rates are continuing. Retailers need to pay greater attention to personalization and relevant product recommendations to combat these declines and ensure that they remain successful.

Target's supply chain woes are coming to a boil. Out-of-stocks and sometimes entirely empty shelves have become all too common, and have come to the attention of the national media.