Provide advanced Tier 3 technical support for Microsoft Office 365, specializing in resolving complex issues beyond standard troubleshooting. Work directly with Microsoft Escalations Engineers to address critical i-----------, perform in-depth diagnostics, and implement long-term solutions. Manage escalated cases, ensure proper i----------- documentation, and contribute to root cause analysis and knowledge base development. Collaborate with cross-functional teams to optimize system performance, deliver user training, and ensure a seamless and efficient Office 365 experience across the organization.