Add notice on deprecating classic sites & pages

[Jihong Zuo (shiongzuo)]

Updated the document to reflect changes in SharePoint Online, including deprecation timelines for classic pages and modernization guidance.

Category

• Content fix
• New article

Related issues

• N/A

What's in this Pull Request?

This PR adds a notice on the upcoming deprecation of classic SharePoint sites and pages, and set up the link to the documentation.

[learn-build-service-prod]

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[learn-build-service-prod]

Learn Build status updates of commit 4164519:

✅ Validation status: passed

File	Status	Preview URL	Details
docs/transform/modernize-classic-sites.md	✅Succeeded	View

For more details, please refer to the build report.

[learn-build-service-prod]

PoliCheck Scan Report

The following report lists PoliCheck issues in PR files. Before you merge the PR, you must fix all severity-1 and severity-2 issues. The AI Review Details column lists suggestions for either removing or replacing the terms. If you find a false positive result, mention it in a PR comment and include this text: #policheck-false-positive. This feedback helps reduce false positives in future scans.

✅ No issues found

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[learn-build-service-prod]

Learn Build status updates of commit c7c8252:

✅ Validation status: passed

File	Status	Preview URL	Details
docs/transform/assess-sharepoint-modernization.md	✅Succeeded	View
docs/transform/modernize-classic-sites.md	✅Succeeded	View

For more details, please refer to the build report.

[Liang Zheng (liangzheng816)]

1. "Classic SharePoint pages are being deprecated" -> Can we use "Classic user-created pages" to be more specific?
2. "creation of new classic experiences will be restricted in certain scenarios" -> Can we use "creation of classic pages will be disabled for new tenants" to be more specific?
3. Need to bold the two milestone dates.
4. "existing classic user-created pages will become read-only" -> "existing classic user-created pages will become read-only for all tenants".
5. "Existing page content" -> "Existing classic page content".
6. "modern SharePoint experiences" -> "modern SharePoint page experiences"

[Jihong Zuo (shiongzuo)]

Updated the notice to be more accurate.

[Liang Zheng (liangzheng816)]

1. "Classic SharePoint pages are being deprecated" -> Can we use "Classic user-created pages" to be more specific?
2. "creation of new classic experiences will be restricted in certain scenarios" -> Can we use "creation of classic pages will be disabled for new tenants" to be more specific?
3. Need to bold the two milestone dates.
4. "existing classic user-created pages will become read-only" -> "existing classic user-created pages will become read-only for all tenants".
5. "Existing page content" -> "Existing classic page content".
6. "modern SharePoint experiences" -> "modern SharePoint page experiences"

[Jihong Zuo (shiongzuo)]

Updated the notice to be more accurate.

[learn-build-service-prod]

PoliCheck Scan Report

The following report lists PoliCheck issues in PR files. Before you merge the PR, you must fix all severity-1 and severity-2 issues. The AI Review Details column lists suggestions for either removing or replacing the terms. If you find a false positive result, mention it in a PR comment and include this text: #policheck-false-positive. This feedback helps reduce false positives in future scans.

✅ No issues found

More information about PoliCheck

Information: PoliCheck | Severity Guidance | Term
For any questions: Try searching the learn.microsoft.com contributor guides or post your question in the Learn support channel.

[learn-build-service-prod]

Learn Build status updates of commit 2118aa7:

✅ Validation status: passed

File	Status	Preview URL	Details
docs/transform/assess-sharepoint-modernization.md	✅Succeeded	View
docs/transform/modernize-classic-sites.md	✅Succeeded	View

For more details, please refer to the build report.

[learn-build-service-prod]

PoliCheck Scan Report

The following report lists PoliCheck issues in PR files. Before you merge the PR, you must fix all severity-1 and severity-2 issues. The AI Review Details column lists suggestions for either removing or replacing the terms. If you find a false positive result, mention it in a PR comment and include this text: #policheck-false-positive. This feedback helps reduce false positives in future scans.

✅ No issues found

More information about PoliCheck

Information: PoliCheck | Severity Guidance | Term
For any questions: Try searching the learn.microsoft.com contributor guides or post your question in the Learn support channel.

[learn-build-service-prod]

Learn Build status updates of commit 90d3f71:

✅ Validation status: passed

File	Status	Preview URL	Details
docs/transform/assess-sharepoint-modernization.md	✅Succeeded	View
docs/transform/modernize-classic-sites.md	✅Succeeded	View

For more details, please refer to the build report.

[Liang Zheng (liangzheng816)]

Content reviewed / approved.

[Liang Zheng (liangzheng816)]

Reviewed - the update looks good.