I loved working with the Cotera team. The platform is great, but the team & customer support itself was phenomenal. Setup was easy and quick, they were able to unblock major initiatives for us, and we eventually grew to a bunch of different teams using it (me on the marketing side, plus our CX team and finance team). Review collected by and hosted on G2.com.
It's not fully self-service...or at least, it wasn't when I was using it (maybe that's changed, I couldn't say...I was one of their early customers so they may have changed this as they grew). You get paired with a data scientist to help as you add in new features. Review collected by and hosted on G2.com.