Merge pull request #293326 from johndowns/reliability-az

Reliability Hub - Update availability zone documentation

Author: prmerger-automator[bot]

articles/reliability/availability-zones-baseline.md

@@ -1,7 +1,7 @@
 ---
 title: Azure availability zone migration baseline
 description: Learn how to assess the availability-zone readiness of your application for the purposes of migrating from non-availability zone to availability zone support.
-author: sonmitt
+author: anaharris-ms
 ms.service: azure
 ms.subservice: azure-availability-zones
 ms.topic: conceptual
@@ -66,7 +66,7 @@ Below are three important questions that will help you choose the correct availa
 
 #### Does your application include latency sensitive components?
 
-Azure availability zones within the same Azure region are connected by a high-performance network [with a round-trip latency of less than approximately 1.2 ms](/azure/reliability/availability-zones-overview#availability-zones).
+Azure availability zones within the same Azure region are connected by a high-performance network [with a low round-trip latency time](/azure/reliability/availability-zones-overview).
 
 The recommended approach to achieving high availability, if low latency isn't a strict requirement, is to configure your workload with a zone redundant deployment.
 

articles/reliability/availability-zones-overview.md

@@ -13,7 +13,7 @@ ms.custom: references_regions, subject-reliability
 
 # What are availability zones?
 
-Many Azure regions provide *availability zones*, which are separated groups of datacenters within a region. Availability zones are close enough to have low-latency connections to other availability zones. They're connected by a high-performance network with a round-trip latency of less than approximately 1.2 ms. However, availability zones are far enough apart to reduce the likelihood that more than one will be affected by local outages or weather. Availability zones have independent power, cooling, and networking infrastructure. They're designed so that if one zone experiences an outage, then regional services, capacity, and high availability are supported by the remaining zones. They help your data stay synchronized and accessible when things go wrong.
+Many Azure regions provide *availability zones*, which are separated groups of datacenters within a region. Availability zones are close enough to have low-latency connections to other availability zones. They're connected by a high-performance network with a round-trip latency of less than approximately 2 ms. However, availability zones are far enough apart to reduce the likelihood that more than one will be affected by local outages or weather. Availability zones have independent power, cooling, and networking infrastructure. They're designed so that if one zone experiences an outage, then regional services, capacity, and high availability are supported by the remaining zones. They help your data stay synchronized and accessible when things go wrong.
 
 Datacenter locations are selected by using rigorous vulnerability risk assessment criteria. This process identifies all significant datacenter-specific risks and considers shared risks between availability zones.
 
@@ -29,10 +29,10 @@ When you deploy into an Azure region that contains availability zones, you can u
 
 There are two ways that Azure services use availability zones:
 
-- **Zonal** resources are pinned to a specific availability zone. You can combine multiple zonal deployments across different zones to meet high reliability requirements. You're responsible for managing data replication and distributing requests across zones. If an outage occurs in a single availability zone, you're responsible for failover to another availability zone.
-
 - **Zone-redundant** resources are spread across multiple availability zones. Microsoft manages spreading requests across zones and the replication of data across zones. If an outage occurs in a single availability zone, Microsoft manages failover automatically.
 
+- **Zonal** resources are pinned to a specific availability zone. You can combine multiple zonal deployments across different zones to meet high reliability requirements. You're responsible for managing data replication and distributing requests across zones. If an outage occurs in a single availability zone, you're responsible for failover to another availability zone.
+
 Azure services support one or both of these approaches. Platform as a service (PaaS) services typically support zone-redundant deployments. Infrastructure as a service (IaaS) services typically support zonal deployments. For more information about how Azure services work with availability zones, see [Azure regions with availability zone support](availability-zones-region-support.md).
 
 Some services don't use availability zones until you configure them to do so. If you don't explicitly configure a service for availability zone support, it's called a *non-zonal* or *regional* deployment. Resources configured in this way might be placed in any availability zone in the region, and might be moved. If any availability zone in the region experiences an outage, non-zonal resources might be in the affected zone and could experience downtime.
@@ -78,7 +78,6 @@ To achieve more reliable workloads:
 
 For more detailed information on how to use regions and availability zones in a solution architecture, see [Recommendations for using availability zones and regions](/azure/well-architected/resiliency/regions-availability-zones).
 
-
 ## Next steps
 
 - [Azure services with availability zones](availability-zones-service-support.md)