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Within each AWS Virtual Private Cloud (VPC), multiple redundant servers are kept within different Availability Zones. |
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Per AWS, "Each Availability Zone is engineered to be isolated from failures in other Availability Zones, and provide inexpensive, low-latency network connectivity to other zones in the same region." [Source]
Each Kubernetes cluster, for example production-cluster-production, is logically grouped within an AWS auto-scaling group (ASG), allowing for easy programmatic expansion when necessary, but are also housed in separate Availability Zones for improved redundancy. See Use of Kubernetes for additional details.
Nodes within a cluster are in 3 separate Availability Zones for additional resource isolation and redundancy. See Service Architecture for additional details.
See System architectureArchitecture for a full system architecture diagram and configuration explanation.
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