My impression is Athena = Lambda + S3 (what i would call true serverless) Redshift Serverless = Auto AWS Managed EC2 instances with local storage + S3 Althou

My impression is Athena = Lambda + S3 (what i would call true serverless) Redshift Serverless = Auto AWS Managed EC2 instances with local storage + S3 Although I could be wrong as I just had a quick 5 minute look at it...