Worked on the MicrosoftDocs/office-docs-powershell repository to deliver consolidated deprecation documentation and migration guidance for Hybrid Telephone Number cmdlets. Focused on updating Markdown-based documentation to announce the deprecation of Remove-CsHybridTelephoneNumber, Get-CsHybridTelephoneNumber, and New-CsHybridTelephoneNumber, while providing clear migration paths to modern alternatives. Improved the formatting and consistency of deprecation notices, aligning documentation with cmdlet lifecycle changes. Leveraged technical writing and documentation architecture skills to clarify migration steps, reducing customer support overhead. The work involved four targeted documentation updates, ensuring customers could transition smoothly to recommended cmdlets and maintain operational continuity during the migration process within PowerShell environments.