Office 365 to Office 365 Migration: Getting Started

6 min read Updated on December 1, 2024 Cloudiway Team

Overview

Organizations undergoing mergers, acquisitions, or restructuring often need to consolidate their Microsoft 365 infrastructure. Cloudiway provides comprehensive tenant-to-tenant migration solutions that handle email, files, Teams, and more—all while maintaining business continuity.

Common Use Cases

  • Company mergers and acquisitions
  • Tenant consolidation projects
  • Organizational restructuring
  • Divestitures and spin-offs

Core Capabilities

Cloudiway offers comprehensive migration support across all Microsoft 365 components:

Provisioning

  • Microsoft 365 Groups
  • Microsoft Teams
  • Shared Mailboxes
  • Rooms & Resources

Data Migration

  • OneDrive to OneDrive
  • SharePoint Online
  • Email, Contacts & Calendars
  • Teams & Channels

Coexistence

  • Calendar Free/Busy
  • GALSync
  • Mail Routing

Features

  • Delta Pass Sync
  • Date Range Filtering
  • Batch Migration

Key Advantages

Enterprise Security

Data remains encrypted during transfer. Only unique identifiers are retained—no actual mail, files, or site data is stored.

Automatic Throttling Management

The platform deals with source and target throttling automatically to maintain optimal migration speed.

Real-time Monitoring

Comprehensive monitoring tools available throughout the process ensure you always know migration status.

Zero Business Disruption

Organizations experience no business disruption during migration, with users continuing work throughout.

Migration Strategies

Cutover Strategy

All users transition simultaneously, typically over a weekend.

  • Simplest approach
  • Best for smaller deployments
  • Minimal coexistence complexity
  • Clear cutover date

Coexistence Model

Both systems operate concurrently using forwarding mechanisms.

  • Necessary for larger migrations
  • Spans multiple days or weeks
  • Requires coordination planning
  • Enables phased transition

Choosing Your Strategy

The right migration strategy depends on your organization's size, complexity, and timeline requirements. Learn more about choosing between cutover and staged migration.

Technical Considerations

Key technical aspects to understand for your migration:

  • Folder hierarchy preservation - The platform recreates exact folder structures in the target
  • Multiple migration passes - Delta passes ensure new content is captured
  • Selective migration - Migrate recent emails (e.g., last 6 months) while deferring older content
  • Throttling optimization - Continuous optimization of API calls maximizes throughput

Next Steps

To begin your Office 365 to Office 365 migration:

  1. Configure your source and target connectors
  2. Set up EntraID applications (if using manual configuration)
  3. Create your migration project in the Cloudiway portal
  4. Import or discover your user list
  5. Run a pilot migration with a small group
  6. Proceed with full migration

Ready to Start?

Sign in to the Cloudiway Portal to create your first tenant-to-tenant migration project.

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