A Microsoft-focused engineer with more than two decades modernizing Exchange, Microsoft 365, and identity environments, Tom writes about what it takes to move email and collaboration platforms without disruption. His articles address the legacy configuration that accumulates over years, the mail flow exceptions, outdated security bypasses, and undocumented workarounds that surface during a migration, and how to reduce that technical debt while keeping security and reliability intact. The scenarios he covers are drawn from direct Exchange-to-cloud migration and modernization work across small and mid-sized organizations.