Exchange Server
End of Support

Exchange Server 2016 & 2019 support ended Oct 14, 2025. Migrate now to secure your organization — a comprehensive guide for IT decision-makers.

Oct '25 Support Ended
2016/19 Versions Impacted
3 Migration Paths
100% Critical Liability

Find Your Migration Path

Where do you want to host your mail infrastructure?

☁️ Cloud First

Migrate to Microsoft 365 / Exchange Online.

🏢 On-Premises

Upgrade to Exchange Server SE.

Cloud Recommendation

Migrating to Microsoft 365 offers the lowest TCO and best security posture.

View Cloud Guide

On-Premises Recommendation

Upgrade to Exchange Server Subscription Edition (SE) for data sovereignty.

View Upgrade Guide

TCO Estimator

500 Users

Drag to set user count — see 5-year cost for all migration paths

On-Premises
$453,400
Exchange Online P2
$399,000
Microsoft 365 E3
$1,263,000
Exchange SE
$665,000
✅ Checklist Phased migration readiness tasks from assessment to decommission 🔧 Implementation Step-by-step guide for all three migration paths ⚠️ Concerns Security, compliance, continuity, and user-experience issues 💰 TCO Analysis 5-year total cost of ownership across all migration options 🛡️ Risk Assessment Risk register with likelihood/impact matrix and mitigations 📋 Licensing Exchange SE, Microsoft 365 plans, CAL guide, and FAQs 🏗️ Architecture Visual solution designs for Cloud, Hybrid, and On-Premises migration paths