Overview
This change package strengthened selected Microsoft 365 configurations while keeping implementation, validation, and rollback steps reviewable through the change-management process.
Environment
Microsoft 365, SSPR, Microsoft Teams, SharePoint Online, OneDrive, external calendar sharing, and Customer Lockbox.
Objective
Apply practical controls to account recovery, meeting participation, guest content access, external calendar exposure, and administrative data-access requests.
Responsibilities
Translated security requirements into configuration changes, documented validation and rollback steps, supported CAB approval, implemented the controls, and verified production results.
Implementation
- Configured self-service password reset.
- Applied Teams presenter and lobby restrictions.
- Adjusted SharePoint and OneDrive guest-sharing controls.
- Restricted external calendar sharing.
- Enabled Customer Lockbox.
Validation
Each change included documented expected behavior, production verification, and a rollback path before the change was closed.
Outcome
The CAB-approved controls were implemented and validated across the selected Microsoft 365 services with rollback documentation retained as part of the change record.
Technologies
Disclosure note
Operational details have been sanitized. Tenant configuration, policy values, evidence packages, and internal approval records are not published.