Nitpick, but the Edge name signaled the switch to the ground up rewrite Spartan engine. Trident is still sort of alive in its zombie corporate state in the Windows backwards compatibility swamp. Trident was still maintained for backward compatibility (and still exists in IE Mode in Chromium Edge), but Edge was always Spartan and it is Spartan that is dead (RIP).
Nitpick, but the Edge name signaled the switch to the ground up rewrite Spartan engine. Trident is still sort of alive in its zombie corporate state in the Windows backwards compatibility swamp. Trident was still maintained for backward compatibility (and still exists in IE Mode in Chromium Edge), but Edge was always Spartan and it is Spartan that is dead (RIP).