region is a large area setup but local region is a small setup
region is a cloud services but local region is design to provide faster service
Each AZ is in seperate building with it own power, cooling and internet. so if one AZ has a problem, the other AZ won't affect.
Yes, if one region goes down, another can continue serving without interruption.
if one AZ fails, our web application can continue running in another AZ
Choose a region closest to our location for fast response time.