One such quality of life feature coming in World of Warcraft Patch 10.1.5 is the ability to freely trade across realms. Though players could party in dungeons and raids with players from other servers, they could only trade conjured items like Healthstones and Mana Biscuits, or loot they were eligible to claim. However, once this new content update hits, players will be able to trade items, gold, or anything else they could normally exchange with characters from any realms in their region.
Here is a recent update:
https://gamerant.com/world-of-warcraft-update-10-1-5-patch-notes/