AWS Snowball is basically a data transport solution for moving high volumes of data into and out of a specified AWS region. On the other hand, AWS Snowball Edge adds additional computing functions apart from providing a data transport solution. The snowmobile is an exabyte-scale migration service that allows you to transfer data up to 100 PB.

https://www.janbasktraining.com/community/aws/if-you-would-like-to-transfer-vast-amounts-of-data-which-is-the-best-option-among-snowball-snowball-edge-and-snowmobile