Episode 53 — Regions and Availability Zones: designing around failure domains
Regions and availability zones are tested in CloudNetX as building blocks for resilience, and this episode explains how to treat them as deliberate failure domains rather than marketing terms. It defines an availability zone as an isolated grouping within a broader region, then explains why spreading workloads across zones helps survive localized infrastructure failures with minimal latency impact. It defines regions as larger geographic and administrative boundaries that help address disasters, large-scale outages, and compliance constraints, and it emphasizes that region choice influences latency, data residency, and operational complexity. The first paragraph focuses on translating requirements into placement decisions, including how uptime targets, recovery expectations, and regulatory boundaries determine whether a design should be single-zone, multi-zone, or multi-region.
