You are right for the pure BSL. I was misremembering because e.g. Hashicorp just give a blanket Additional Use Grant for production use that doesn't compete wit

You are right for the pure BSL. I was misremembering because e.g. Hashicorp just give a blanket Additional Use Grant for production use that doesn't compete with the licensed product [1]. MariaDB is a lot less generous, e.g. restricting you to less than three production servers for MaxScale. So the ability to self-host BSL code depends a lot on the chosen Additional Use Grant. I don't mind Hashicorp's, but the one publicly offered by MariaDB is pretty restricting. 1: https://www.hashicorp.com/bsl https://www.hashicorp.com/bsl