What runs on it
Every part of the platform that needs a system of record, the pricing engine, the order lifecycle, quote requests, the organization hierarchy, the audit log, reads and writes to the same PostgreSQL database. There is no separate proprietary store for any of it.
Why a standard installation matters
Because it is stock PostgreSQL rather than a proprietary fork, standard backup tooling, monitoring, replication and hosting options all apply without modification. You can run it yourself, hand it to a partner, or use a managed PostgreSQL service; only the connection string changes.
What queries it
The backend reads and writes through Fastify with MikroORM, with Zod contracts type-checking both sides of every request, so there is no separate ORM abstraction and no second database for another part of the platform to drift out of sync with. Cache and background queues sit next to it in Redis, and catalog search runs in its own Meilisearch index: each of the three systems has one job, and none of them duplicates the others’ data without a reason.