Merge pull request #105108 from surajmb/patch-16

Update for SameSite

Author: PRMerger6

articles/application-gateway/whats-new.md

@@ -22,6 +22,7 @@ Azure Application Gateway is updated on an ongoing basis. To stay up-to-date wit
 
 |Feature  |Description  |Date added  |
 |---------|---------|---------|
+|Affinity cookie changes |When cookie based affinity is enabled, Application Gateway injects another identical cookie called *ApplicationGatewayAffinityCORS* in addition to the existing ApplicationGatewayAffinity cookie. *ApplicationGatewayAffinityCORS* has two more attributes added to it (*SameSite=None; Secure*) so that sticky session are maintained even for cross-origin requests. See [Application Gateway Cookie based affinity](configuration-overview.md#cookie-based-affinity) for more information. |February 2020 |
 |Probe enhancements |With the custom probe enhancements in Application Gateway v2 SKU, we have simplified [probe configuration](https://docs.microsoft.com/azure/application-gateway/application-gateway-create-probe-portal#create-probe-for-application-gateway-v2-sku), facilitated [on-demand backend health tests](https://docs.microsoft.com/azure/application-gateway/application-gateway-create-probe-portal#test-backend-health-with-the-probe) and added [more diagnostic information](https://docs.microsoft.com/azure/application-gateway/application-gateway-backend-health-troubleshooting#error-messages) to help you troubleshoot backend health issues.  |October 2019 |
 |More metrics |We've added the following new metrics to help you monitor your Applicaiton Gateway v2 SKU: [Timing-related metrics](https://docs.microsoft.com/azure/application-gateway/application-gateway-metrics#timing-metrics), Backend response status, Bytes received, Bytes sent, Client TLS protocol and Current compute units. See [Metrics supported by Application Gateway V2 SKU](https://docs.microsoft.com/azure/application-gateway/application-gateway-metrics#metrics-supported-by-application-gateway-v2-sku). |August 2019 |
 |WAF custom rules |Application Gateway WAF_v2 now supports creating custom rules. See [Application Gateway custom rules](custom-waf-rules-overview.md). |June 2019 |