IN LANE

In super early lane you want to match the push speed of your enemy. Dont use your abilities too much since you can run out of mana quickly. Try to chill in early game and farm.
Poke the enemy in lane since you outrange most champions. Use your basic poke combo to harass him.
Try to back at around 1200g for Stinger, also dont forget to buy control wards.

If your jungler ganks try to dash into and hit the enemy with your E Shifting Sands since it will slow them. - Often its best to just farm early game though since its when youre the weakest.



MID GAME

After laning phase you can go to the sidelane and continue farming while your botlane/jgl stays midlane. If you have Teleport you can always join your team for teamfights - if you dont have it always be rdy to join them!
Azir is super good in the sidelane since he is hard to face 1v1. Continue gaining experience and farm there to get even stronger. When pushing try to make use of your passive near dead turrets when you are about to be ganked 2v1.

In teamfights you want to stay safe and fight front to back. Your main goal is to survive and slowly kill anything thats infront of you.
The biggest mistake alot of Azir players do is overforce some big Shurima Shuffle play at the start of the fight which kills them - this is not ideal.
The best way to use your ulti is mid-teamfight when alot of enemys are low already, a good ulti can decide teamfights here.


LATE GAME

In late game you can be the gamechanger. Azir is one of the best lategame champions since you have constant DPS and low spell CD while also having an escape and peel.
Try to stay grouped with your team and go for 5v5 teamfights since thats your strength.
As usual fight front to back and dont go for not needed Shurima Shuffle plays! If the enemys decide to collapse on you try to use your Ultimate in a defensive way to protect you by just ulting them away.

If you really see an opportunity to go in and start a fight with Shurima Shuffle please only do so if you have Stopwatch or Zhonya's Hourglass.