Avoid standing too close to Azir’s Soldiers W as he can auto attack you from afar. When he places a Soldier W, move to a safer position out of its range.
Go for a trade after Azir’s Soldier W has disappeared. It’s best to wait for the Soldiers W to disappear first before fighting him as his damage output will be decreased.
After level 6 keep a keen eye on the map and Azir’s mana bar. If you spot the enemy Jungler nearby, back away as Azir might try to Shurima Shuffle and set up his Jungler.
Azir will try and delay a team fight and poke you down with his W as much as possible before his team initiates. Don’t let him poke you down by starting the fight as soon as possible rather than delaying it.
CC is your best friend to counter his engage and the Shurima Shuffle. If he goes in, try and CC him as fast as possible to shut him down and prevent him from pushing your team towards his.
After his first back, Azir is going to be pushing constantly. Try and pick champions that have kill pressure and can match his wave clear so you do not lose your Tower early on.
Once Azir has picked up his Nashor's Tooth, he is going to push the wave really quickly. Try to keep the wave as even as possible by matching his damage on the minion wave. If he uses an ability, you’ll need to use one too.
The best time to fight Azir is when Soldiers W are down. This is because he will lack a lot of damage. Try to start fights whenever he has no Soldiers W available.
After Azir hits level 6, he will have a lot more protection and can disengage quite easily thanks to his Ultimate R. While his Ultimate R is down, try to abuse the cooldown and look for kills.