# SFR5 - Availability Zones

Module Specification for the Azure Verified Modules (AVM) program

ID: SFR5 - Category: Composition - Availability Zones Modules that deploy zone-redundant resources MUST enable the spanning across as many zones as possible by default, typically all 3.
Modules that deploy zonal resources MUST provide the ability to specify a zone for the resources to be deployed/pinned to. However, they MUST NOT default to a particular zone by default, e.g. 1 in an effort to make the consumer aware of the zone they are selecting to suit their architecture requirements.
For both scenarios the modules MUST expose these configuration options via configurable parameters/variables.
Note For information on the differences between zonal and zone-redundant services, see Availability zone service and regional support


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Source: https://raw.githubusercontent.com/Azure/Azure-Verified-Modules/refs/heads/main/docs/content/specs-defs/includes/shared/shared/functional/SFR5.md
Last Modified: 0001-01-01