Upd description

Author: cwatson-cat

articles/sentinel/index.yml

@@ -5,12 +5,12 @@ summary: Microsoft Sentinel provides attack detection, threat visibility, proact
 
 metadata:
   title: Microsoft Sentinel documentation
-  description: This article presents use cases and scenarios to get started using Microsoft Sentinel. See and stop threats before they cause harm, with SIEM reinvented for a modern world. Microsoft Sentinel is your birds-eye view across the enterprise.
+  description: Microsoft Sentinel provides attack detection, threat visibility, proactive hunting, and threat response to help you stop threats before they cause harm.
   ms.service: microsoft-sentinel
   ms.topic: landing-page
   author: yelevin
   ms.author: yelevin
-  ms.date: 02/12/2024
+  ms.date: 02/15/2024
 
 # linkListType: architecture | concept | deploy | download | get-started | how-to-guide | learn | overview | quickstart | reference | tutorial | video | whats-new