Nickname implies it's unofficial, but S3 is very much the product name too: https://aws.amazon.com/s3/faqs/ https://aws.amazon.com/s3/faqs/ "Simple storage se

Nickname implies it's unofficial, but S3 is very much the product name too: https://aws.amazon.com/s3/faqs/ https://aws.amazon.com/s3/faqs/ "Simple storage service" is used once. "S3" is used throughout.