Incorporated changes in AZ section

Author: rolyon

articles/availability-zones/az-overview.md

@@ -4,7 +4,7 @@ description: Learn about regions and Availability Zones in Azure to meet your te
 author: cynthn
 ms.service: azure
 ms.topic: article
-ms.date: 04/21/2020
+ms.date: 04/22/2020
 ms.author: cynthn
 ms.custom: fasttrack-edit, mvc
 ---
@@ -40,8 +40,8 @@ An Availability Zone in an Azure region is a combination of a fault domain and a
 
 Build high-availability into your application architecture by co-locating your compute, storage, networking, and data resources within a zone and replicating in other zones. Azure services that support Availability Zones fall into two categories:
 
-- **Zonal services** – you pin the resource to a specific zone (for example, virtual machines, managed disks, Standard IP addresses), or
-- **Zone-redundant services** – platform replicates automatically across zones (for example, zone-redundant storage, SQL Database).
+- **Zonal services** – where a resource is pinned to a specific zone (for example, virtual machines, managed disks, Standard IP addresses), or
+- **Zone-redundant services** – when the Azure platform replicates automatically across zones (for example, zone-redundant storage, SQL Database).
 
 To achieve comprehensive business continuity on Azure, build your application architecture using the combination of Availability Zones with Azure region pairs. You can synchronously replicate your applications and data using Availability Zones within an Azure region for high-availability and asynchronously replicate across Azure regions for disaster recovery protection.