> X. Dev/prod parity > Keep development, staging, and production as similar as possible
Gets interesting at the seams of software & data environments. If my preprod stack operates independently of my prod stack (due to different internal users), but preprod data stack is best tested on prod data, the seams of these two things imply there should be a separate data stack for both preprod data versus preprod-internal.
Generally pro 12-FA, but it's very service dev oriented.
I know an e-commerce company where the staging environment was completely hijacked by product managers to "stage" their data. They've even convinced management to ask IT to build a tool for migrating data from staging to production. All of this just to avoid building a proper release flow for (product-)data.