[kingwil]

Change(s):

• Add three XDR workbooks alongside their existing Sentinel parents:
  • XDR Workbooks/MicrosoftDefenderForEndPoint.json
  • XDR Workbooks/MicrosoftDefenderForIdentity.json
  • XDR Workbooks/MicrosoftDefenderForOffice365detectionsandinsights.json
• Preserve the existing solution content and packaging selections: 40 analytic rules, 387 hunting queries, three Sentinel workbooks and one data connector.
• Update solution packaging selections and version metadata, regenerate the ARM template, UI definition and test parameters, and add Package/3.2.1.zip.
• Preserve existing Sentinel workbook serialization through string serializedData; package XDR workbook content as Notebook objects under the preview Defender workbook resource contract.
• No existing source-content deletions, migrated XDR detections, toolkit changes or migration logs are included.

Reason for Change(s):

• Make the existing Defender dashboards available as XDR workbook siblings without replacing or reducing the existing Sentinel solution.
• Preserve the original Sentinel experience while adding the reviewed XDR query conversions and workload dependencies.
• Supporting toolkit fixes are submitted separately in Toolkit: fix reviewed Defender workbook conversion and additive V3.1 packaging oferInbar/Azure-Sentinel#6.

Version Updated:

• Solution/package version: 3.2.1.
• Existing Sentinel content versions are preserved.
• No detection or analytic-rule source templates are changed.

Testing Completed:

• Offline conversion and explicit query/dependency review completed for all three XDR workbooks: 285 business queries converted and five workspace scope helpers removed.
• Scoped package inspection confirmed that all original packaging selections and generated resource type/name identities remain present.
• Confirmed three XDR workbook registration/installation pairs and that ZIP template JSON matches the adjacent generated files.
• XDR workbook deployment defaults to off (DeployDefenderWorkbook=false).
• No cloud deployment, live query execution, workbook UI qualification, installation/readback or repeat-update qualification was performed.

Checked that the validations are passing and have addressed any issues that are present:

• No — this is an unqualified review candidate, not an accepted release.
• The full official validation suite was not rerun for the corrected additive package.
• The packaging backend generated the artifacts, but its automatic ARM-TTK step failed while extracting nested templates and subsequently reported an empty TemplateText argument.
• Preview-provider authentication/write support and independent workbook installation/readback/update evidence remain unverified.
• Reproducible regeneration currently depends on the separately submitted toolkit fixes linked above.