How does the AWS global infrastructure offer high availability and fault tolerance to its users?
The AWS infrastructure is made up of multiple AWS Regions within various Availability Zones located in areas that have low flood risk, and are interconnected with low-latency networks and redundant power supplies.
The AWS infrastructure consists of subnets containing various Availability Zones with multiple data centers located in the same geographic location.
AWS allows users to choose AWS Regions and data centers so that users can select the closest data centers in different Regions.
The AWS infrastructure consists of isolated AWS Regions with independent Availability Zones that are connected with low-latency networking and redundant power supplies.
Explanations:
Although AWS Regions are made up of multiple Availability Zones with low-latency networks and redundant power supplies, not all Availability Zones are in low flood-risk areas; this is not guaranteed across all locations.
Availability Zones contain multiple data centers but are not limited to subnets, nor are they all located within the same geographic location. AWS Regions consist of multiple, isolated Availability Zones across broader geographic areas.
AWS does allow users to choose Regions and Availability Zones, but it does not allow selection of specific data centers within Regions, and users do not necessarily select the “closest” data centers directly.
AWS Regions are isolated from each other, with each consisting of independent Availability Zones connected via low-latency networks and designed with redundancy and fault tolerance in mind.
I reckon the answer is:
The AWS infrastructure consists of isolated AWS Regions with independent Availability Zones that are connected with low-latency networking and redundant power supplies.