Related to 202404071304 Resiliency Overview
Related to 202404071420 Azure resiliency concepts

1. Things within a 2ms boundary
2. Isolation based on (Power, Cooling, Networking) from other AZs
3. Minimum of 3 zones in every region. Even if there are more, in your subscription you will see 3.
4. There is no guaranteed distance between AZs/Not a DR mechanism

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