I work with a DevOps guy who is the biggest enthusiast of Postgres that I know. I am responsible for the Data Warehouse, and he blocks Redshift and Athena, says

I work with a DevOps guy who is the biggest enthusiast of Postgres that I know. I am responsible for the Data Warehouse, and he blocks Redshift and Athena, says that a Postgres RDS instance can keep up with any in-memory columnar database, given enough tuning. Aside from that, its mainly CV-driven development, where people either want to work with what they already know and are comfortable with, or want to add a feather in their cap so the backend has to have the latest buzzwords and the frontend has to use the latest JavaScript framework.