Amazon.com, Inc. has surpassed Walmart for the first time in overall revenue, recording $716.9 billion in sales last year. This achievement coincides with Amazon's ambitious $200 billion investment plan for infrastructure, including the launch of Amazon Supply Chain Services to compete with logistics giants like UPS and FedEx. The company continues to attract major clients and bolster its position in the grocery market, while its stock reflects optimism with a rise to $268.42.