Microsoft Defender XDR
GeneralCommunicating with experts in the Microsoft Defender Experts service
In brief
The documentation now states that Security Delivery Experts are included for services licensed for at least 1,500 seats, replacing the previous 500-device threshold.
What Defender admins need to know
Administrators assessing service eligibility should verify their license against the updated seat threshold.
Summaries are generated from the documentation change itself.
Documentation change
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Communicating with experts in the Microsoft Defender Experts service
The Security Delivery Expert (SDX) is responsible for managing the overall relationship for your organization with the Defender Experts MDR service. They are your trusted advisor working along with XDR experts' team to help you protect your organization.
The SDX provides the following services:
@@ -14,7 +14,8 @@ ms.topic: concept-article ms.custom: - cx-ti - cx-dex-ms.date: 03/16/2026+ms.date: 07/29/2026+ai-usage: ai-assisted --- # Communicating with experts in the Microsoft Defender Experts service@@ -88,7 +89,7 @@ While the previous scenarios involve the experts initiating communication with y The Security Delivery Expert (SDX) is responsible for managing the overall relationship for your organization with the Defender Experts MDR service. They are your trusted advisor working along with XDR experts' team to help you protect your organization. > [!NOTE]-> Security Delivery Experts are included if your Defender Experts service is licensed for 500 or more devices.+> Security Delivery Experts are included if your Defender Experts service is licensed for 1,500 or more seats. The SDX provides the following services: