^ Let's not forget that DS9 was on the frontier in "Emissary" before the wormhole was discovered.
I liked the reference to transwarp beaming, but could the Dominion transporter from "Covenant" not have served the same purpose?
I imagine "transwarp beaming" is just a general term for "faster than warp beaming", the same way "transwarp drive" is just a general term for "faster than warp drive". So any sort of interstellar transporter beam is a form of transwarp transportation.