They say it's designed to provide significant durability : https://docs.aws.amazon.com/AmazonS3/latest/dev/DataDurability.html https://docs.aws.amazon.com/Amazo

They say it's designed to provide significant durability : https://docs.aws.amazon.com/AmazonS3/latest/dev/DataDurability.html https://docs.aws.amazon.com/AmazonS3/latest/dev/DataDurabili... (99.999999999% durable over a year per object, and able to sustain data loss in 2 facilities). Given the peeks that amazon has provided into the scale of S3, I don't know if you CAN 'back it up'.