Configure and optimize performance of Amazon Athena federation with Amazon Redshift | Amazon Web Services

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Many organizations want to create a "lake house" integrating their S3 data lake and Redshift data warehouse. With Redshift, this is done using Redshift Spectrum, which allows Redshift to query S3 data. With Athena, this used to involve unloading the Redshift tables to S3. This article explains how to use Athena Redshift Federation to query Redshift data directly from Athena.

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