Hello @Rakesh Singh,
Thank you for posting your query on Microsoft Q&A.
Yes, Defender for Servers Plan 2 does cover all features previously provided by Defender for DNS. You can refer to the documentation linked below, which details how DNS threat detection is now included under Defender for Servers Plan 2.
Microsoft Defender for Cloud - Business Model and Pricing Updates
I hope this information is helpful. Please feel free to reach out if you have any further questions.
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Thanks,
Raja Pothuraju.