Each AWS region contains multiple distinct locations called Availability Zones (AZs). Each
AZ is engineered to be isolated from failures in other AZs. An AZ is a data center, and in
some cases, an AZ consists of multiple data centers. AZs within a region provide
inexpensive, low-latency network connectivity to other zones in the same region. This allows
you to replicate your data across data centers in a synchronous manner so that failover can
be automated and be transparent for your users
An AZ enables fault tolerance and high availability for your applications within a region
not across regions
CloudFront is the technology that is used to enable caching of data for faster delivery to
end users
Direct Connect is the technology that is used to connect your on-premises network to AWS to
form a hybrid cloud