Amazon faced GPU shortages, leading to project delays in its retail division.In response, Amazon launched Project Greenland to manage and allocate GPU supply.Efficiency and ROI now determine internal GPU allocation at Amazon.The company has created a more structured process for GPU requests.Amazon now demands data and ROI proof for every GPU request.The company's retail unit has full access to AI processors through AWS.Project Greenland ensures shared GPU capacity and maximum utilization.Amazon plans to invest $1 billion in GPU-powered AI projects.The company aims to optimize cluster utilization and reduce idle capacity.AI investments contributed to $2.5 billion in operating profits for Amazon last year.