Microsoft has announced that SharePoint Server 2016 and 2019 will reach end of support on July 14, 2026. After that date, no security patches, no bug fixes, no compliance updates.
Organizations running these versions — many as their primary document management system — face a decision point. Migrate to SharePoint Online/Microsoft 365, or move content to an alternative ECM. This playbook covers both paths.
What's Happening: EOL Timeline and Implications
SharePoint Server 2016/2019 extended support ends July 14, 2026. Post-EOL:
- No security patches — vulnerability window opens immediately
- No bug fixes — existing issues become permanent
- No compliance updates — regulatory requirements drift out of alignment
- No technical support from Microsoft
- Customizations and third-party integrations may break without warning
Immediate action required: Inventory your SharePoint farms now. Many organizations discover millions of documents across forgotten sites, libraries, and subsites.
Why SharePoint Online Isn't Always the Answer
"Just upgrade to M365" sounds simple, but overlooks key realities:
- Data gravity: Petabyte-scale libraries resist cloud migration due to bandwidth limits
- Compliance requirements: FedRAMP, ITAR, HIPAA demand on-premises control
- On-premises mandates: Regulated industries require air-gapped or hybrid deployments
- Licensing costs: M365 E5 per-user pricing multiplies across large user bases
- Customization limits: SharePoint Online restricts workflows, metadata, and integrations
Migration Options: Target System Comparison
Evaluate alternatives based on your requirements:
Cost: High
Compliance: Moderate
Cost: Medium-High
Compliance: High
Cost: Medium
Compliance: High
Cost: Medium
Compliance: High
Cost: Varies
Compliance: Varies
The Hidden Complexity of SharePoint Content Migration
SharePoint isn't just files — it's a metadata-rich ecosystem:
- Custom columns and content types per site/library
- Permission inheritance breaks and unique ACLs
- Workflow states and approval histories
- Version histories (often 10+ versions per document)
- Managed metadata term sets and taxonomy
- Document sets and linked items
- Search configurations and refiners
80% failure rate: Most "SharePoint migrations" lose metadata, break permissions, or truncate versions because tools only copy files.
How AetherFlow Simplifies SharePoint Migration
AetherFlow's SharePoint connector handles the full complexity:
- Automated field mapping with visual MetaMap™ interface
- Native support for custom columns, content types, versions
- Permission export/import with inheritance preservation
- Pre-built connectors to OnBase, FileHold, Square 9, and 20+ others
- Built-in validation: document counts, metadata diffs, binary checksums
Connectors included: SharePoint source + OnBase, FileHold, Square 9, Alfresco, Documentum targets. Custom API connectors for others.
Your 90-Day Migration Playbook
From inventory to cutover — compressed timeline for teams ready to execute:
- Inventory sites/libraries
- Stakeholder alignment
- Target system selection
- Field mapping
- 1000-doc pilot migration
- Validation
- Phased or big-bang execution
- Real-time monitoring
- Issue resolution
- Post-migration QA
- User acceptance
- Source decommissioning
Start Your SharePoint Migration Today
With 15 months until EOL, now is the time to inventory, plan, and pilot. AetherFlow makes it straightforward.