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Two competing departments inside AWS. Technically, Athena is based on modified Presto while Redshift is (very) heavily modified Postgres.

• the_af 5y ago
  Competing departments and competing underlying technologies. Postgres (and therefore Redshift) is running a relational database engine under the hood.
  • glogla 5y ago
    Yes, though with ra3 storage being on S3, I think they are getting more and more similar.