Add South Central US to tier-1 in the cost calculator and announce the region publicly (#1425)

Author: kuthiala

content/nginxaas-azure/changelog/changelog.md

@@ -13,6 +13,16 @@ To see a list of currently active issues, visit the [Known issues]({{< ref "/ngi
 
 To review older entries, visit the [Changelog archive]({{< ref "/nginxaas-azure/changelog/archive" >}}) section.
 
+## November 13, 2025
+
+- {{% icon-feature %}} **NGINXaaS for Azure is now generally available in more regions**
+
+  NGINXaaS for Azure is now available in the following additional regions:
+
+  - South Central US
+
+See the [Supported Regions]({{< ref "/nginxaas-azure/overview/overview.md#supported-regions" >}}) documentation for the full list of regions where NGINXaaS for Azure is available.
+
 ## October 07, 2025
 
 - {{% icon-feature %}} **NGINXaaS is now running NGINX Plus Release 35 (R35) in the Stable Upgrade Channel**

content/nginxaas-azure/overview/overview.md

@@ -46,7 +46,7 @@ NGINXaaS for Azure is supported in the following regions:
 {{< table >}}
 | **North America**                                              | **South America** | **Europe** | **Asia Pacific** |
 |----------------------------------------------------------|--------------------------------------------|--------------------------------------------|-------------------------|
-| West Central US <br> West US <br> East US 2 <br> West US 2 <br> West US 3 <br> East US <br> Central US <br> North Central US <br> Canada Central | Brazil South | West Europe <br> North Europe <br> Sweden Central <br> Germany West Central <br> UK West <br> UK South | Australia East <br> Japan East <br> Korea Central <br> Southeast Asia <br> Central India <br> South India |
+| West Central US <br> West US <br> East US 2 <br> West US 2 <br> West US 3 <br> East US <br> Central US <br> North Central US <br> South Central US <br> Canada Central | Brazil South | West Europe <br> North Europe <br> Sweden Central <br> Germany West Central <br> UK West <br> UK South | Australia East <br> Japan East <br> Korea Central <br> Southeast Asia <br> Central India <br> South India |
 {{< /table >}}
 
 

static/nginxaas-azure/js/cost-calculator_v2.js

@@ -31,6 +31,7 @@
       southindia: { label: "South India", tier: 3 },
       ukwest: { label: "UK West", tier: 3 },
       uksouth: { label: "UK South", tier: 3 },
+      southcentralus: { label: "South Central US", tier: 1 },
     },
     // cost per NCU
     tiersCosts: {