Amazon has some public data sets (data already on s3 on some of them):
https://w.amazon.com/index.php/TPC-H100GBDemo#To_use_the_1TB_data_set
https://docs.aws.amazon.com/redshift/latest/gsg/rs-gsg-create-sample-db.html
https://docs.aws.amazon.com/redshift/latest/gsg/rs-gsg-create-sample-db.html
https://aws.amazon.com/blogs/aws/tag/public-data-sets/
https://registry.opendata.aws/
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I put a lot of thoughts into these blogs, so I could share the information in a clear and useful way. If you have any comments, thoughts, questions, or you need someone to consult with, feel free to contact me:
https://www.linkedin.com/in/omid-vahdaty/