Understanding Microsoft Azure Availability Zones! 

got my az-104 last week, your videos are the best azure resource that is out there. keep up the magnificent work you're doing

Thanks John. Really appreciate your time and effort in producing these videos.

Another great video John! Thank you for your contributions to the community! We appreciate it bud!

no bs, no bluffing he really knows his stuff.

That was crystal clear and so well explained, thank-you for sharing your knowledge and helping so many level up!

Great informative video, John! Keep doing these! Thanks!

thanks John for making these high quality videos! whole community should be thankful!

Great video. A tricky concept well explained. Thanks for producing and posting.

enjoying this video for today learning, thanks a lot!

best video i've ever seen on availability zones. The visual of the subscriptions and how resources could be dispersed in a given region and the zones; well done! I've failed AZ104 twice now and you sir are heavily recommended online and can't believe I didn't hear about you before my first failed attempts!!!

Thank you John , was having some challenges grasping this Availability Zone concept, this is a great help.

Yes it's very interesting to me that VNETs and subnets in Azure can span all AZs in a given Region, whereas in AWS, a subnet in a VPC can only exist in 1 AZ at a time. Good video!

Nice video. Working as an IT expert in government "fire / medic". It explains a load balancer, gateways ... perfectly. Keep it up.

I always thought AZ represent a physical datacenter. Thanks John for the details and helped clarify a lot of questions i had about AZ .

Thank you for an amazing video.

Thank you for this rich extremely-beneficial content; I know it takes a lot of prep work to put all this together

Excellent video as usual, lots of very helpful details. Thanks

Thanks indeed John, useful again video!!

Thanks John, really great training material.

Generic comment to show my appreciation. Keep winning John!

Best AZ explanation available on the internet

Thanks John, very helpful!

Very helpful. Writing here because of the YT algorithm. ;)

Great video by John Thanks a lot

Fantastic material on your channel John, thank you so so much! People like you make this world a better place! Really useful for my new job! Also I see how you've improved audio etc in the newer videos vs the old. Seems post-tattoo videos are better quality :D

This was helpful, thank you!

thanks John! super interesting this video :)

Thanks a lot, John!

Thanks John.

Great explanation,Thanks

great content

Excellent explanation, thanks

For the algorithm! 😁

John, as using Zone Redundancy improves resiliance when one has multiple eggs in multiple baskets does the service SLA change? I'm trying to discover the zone redundant SLAs for a number of supported services without success.

How come if you don't choose an AZ, the disk always matches the VM? The disk and VM go somewhere, and even if the disk is LRS, when you create a VM, it matches the disk, and it certainly is in some portion of the hardware belonging to a zone. Does the disk dictate which zone it is, in the background? Same goes for data disks. You can attach a data disk to any VM zoneless VM. Are they all always in the same "invisible" zone?

Do You have a video discussing Azure AZs, App services and HA? Is it possible to have App service plan with 2 hosts spread between 2 Azure AZs. Thanks!

So, Availability Sets are to racks, as Availability Zones are to datacentres. Is that right??

An availability set gives guarantees on update domains, is this also the case for availability zones?