Amazon built Redshift by using technology from Paraccel. Paraccel was built on Postgres. See a Quora answer I wrote: https://www.quora.com/Amazon-redshift-use

Amazon built Redshift by using technology from Paraccel. Paraccel was built on Postgres. See a Quora answer I wrote: https://www.quora.com/Amazon-redshift-uses-Actians-ParaAccel-MPP-database-so-what-does-Amazon-redshift-team-work-on-Only-integrating-ParaAccel-in-amazon-ecosystem-Do-some-people-from-Redshift-team-work-on-ParaAccel-database-as-well https://www.quora.com/Amazon-redshift-uses-Actians-ParaAccel...