Walmart is expanding its business activities by selling its AI software, which was previously used internally, to other companies. The software uses artificial intelligence to optimize the routes for truck deliveries, leading to savings of $90 million for Walmart in a year. The company aims to empower other businesses with the same successful technologies that it has utilized. The pricing of the software will depend on factors such as usage volume and frequency. This move is part of Walmart's strategy to diversify its business beyond retail, following the trend of retailers entering faster-growing areas with higher profit margins. Other retailers, including Target and Kroger, have also been diversifying their businesses in a similar way.