https://www.polygon.com/2018/8/23/17774342/battle-for-azeroth-azerite-armor-tradeable

In a recent developer Q&A for World of Warcraft: Battle for Azeroth, game director Ion Hazzikostas announced that players will be able to trade the new Azerite gear with one another come Aug. 28. Players were previously barred from ever trading Azerite pieces, leaving them locked to the player that originally received them.

Hazzikostas revealed that the development team had originally believed that Azerite pieces were too complicated to be tradable, and feared players would regret trading them. However, the team has now realized that getting a piece of Azerite gear and not being able to trade it to a friend if they need it feels far worse than giving something useful away.