is Prisma a production flow tool ? I mean, when developing a GraphQL Server do you need to have Prisma all the time or is it more of a schema-to-db compiler ?

It is a “middleman” between your GraphQL server and your database. It is required any time your GraphQL server wants to interact with any of your databases.

correct, Prisma is an infrastructure component of your GraphQL backend stack between the GraphQL Server and DB(s)

Thanks a lot guys, will keep looking into it