I see a lot of people think Azshara got betrayed by N’Zoth and misinterpret how the encounter in the Eternal Palace ended. I believe there are strong reasons the truth is quite the opposite. There’s plenty of evidence that points to the fact that everything went her way.
Let’s start with the fact that she has been very inviting to the Horde and Alliance, with the reason of none other than for them to bring all their Azerite necklaces in order to break the chains of N’Zoth’s prison.
We can start with all the lines of Il’Gynoth who predicted all of this would happen. The one sentence that has clearly reoccured is “The Diamond King has been made a pawn.”, referring to Magni, also said in the same way by Azshara in the encounter.
“Every move you’ve made has been according to my will. That lumbering Dwarf believed you could save Azeroth by empowering your shiny little heart, the gift of a sleeping titan. Yes… a titan’s heart was exactly what was needed, not to heal the world, but to shatter the prison of a god. Such delicious irony, the Diamond King has been made a pawn. The ritual nears completion, The Black Empire rises and the world awaits its true queen.” - Azshara in the last encounter in Eternal Palace
So, as you can see, she was very aware of what was going to happen and everything went according to her and N’Zoth’s plan. It is a series of events which leads to the rise of the Black Empire.
One of the interpretations of the end cinamtic is that she dies, the chains are broken, N’Zoth is finally free and resurrects her and pulls her to him, away from the Alliance and Horde, pretty much saving her.
She has a shocked look on her face, but it’s not a fearful reaction. It’s pretty much how characters react when they are brought to life shortly after dying.
Azshara and N’Zoth have a weird relationship, but I think they know they need eachother in order to achieve their goals. N’Zoth is more powerful, but is not stupid. He wants to corrupt everyone, but it’s not like Azshara is fighting against it, she accepts it because it empowers her.
They might betray eachother at some later point, but it’s too soon for that.
I welcome anyone to argue against the points I mentioned.