This is for Amazon as a whole (so not AWS) but recent news (26 May 2023) seems that they are targeting net-zero by 2040:
"The ecommerce giant recently backed out of a commitment to make 50% of its shipments net-zero carbon by 2030. Amazon said in a statement that it would roll this goal into a broader Climate Pledge to reach net-zero carbon across all its operations by 2040. That's a decade later than the 50% goal, which was called "Shipment Zero" at the time." [0]
"Amazon is the world’s largest corporate purchaser of renewable energy and is on a path to powering our operations with 100% renewable energy by 2025"
https://sustainability.aboutamazon.com/environment/renewable...