3× Microsoft Partner of the Year

Microsoft 365 Tenant-to-Tenant
Migration. Done Right.

Mergers, acquisitions, divestitures, or consolidation. We migrate users, data, and configurations between Microsoft 365 tenants with minimal disruption and full data integrity.

250K+
Users migrated
99%
Client retention
Tier 1
Direct CSP with Microsoft

As Featured In

ForbesEntrepreneurBusiness InsiderCIOReviewInc. 5000 (2×)
Enterprise M&A Migrations

Consolidate Tenants Without Disrupting Your Business

Tenant-to-tenant migrations are high-stakes. User identities, Teams data, SharePoint sites, and licensing all need to transfer cleanly. We’ve done it for organizations of every size.

1

Full Workload Migration

Exchange, OneDrive, SharePoint, Teams (channels, chats, files), and Entra ID users and groups are all migrated to the target tenant.

2

Minimal-Disruption Approach

We use domain coexistence and phased migrations so users stay productive throughout. Brief email downtime occurs during the DNS cutover, but we coordinate timing to minimize impact.

3

Identity & Security Rebuild

We merge Entra ID directories and then manually rebuild conditional access policies, compliance configurations, and security settings in the target tenant to match your requirements.

Source Tenant
Acquired Tenant
Unified Tenant, Secured

“We’re Merging Two
Complex Environments.

Can you migrate Teams data (channels, chats, files)?
Yes. We migrate Teams channels, files, and configurations. For chat history, we use Microsoft’s supported tools to preserve as much conversation context as possible in the target tenant.
What about SharePoint sites and permissions?
SharePoint sites, document libraries, and metadata are migrated. We map security groups from the source tenant to the target. Note: custom permissions do not migrate automatically and will need to be rebuilt in the target tenant.
How do you handle domain transfers between tenants?
We coordinate domain cutover with temporary UPN changes and coexistence routing so email flows continuously. Users experience minimal disruption, often just a re-login prompt.
How long does a T2T migration take?
Timeline depends on user count, data volume, and workload complexity. Small consolidations can complete in 2–4 weeks. Larger enterprise M&A migrations typically run 4–12 weeks with phased cutovers.
After the Migration

One Unified Tenant. One Partner.

Post-migration, we help you optimize the consolidated environment and provide ongoing management.

Unified Security Posture

Consolidated conditional access, unified Defender policies, and a single compliance framework across the merged organization.

RyanCare Support

U.S.-based certified tech specialists with an average response under 25 minutes. One support team for your entire organization.

License Optimization

We consolidate and optimize licensing across the merged tenant, eliminating redundancies and ensuring every user has exactly what they need.

AI-Powered
Human-Driven

You’ll Always Talk to a Person.
Behind Them, AI Makes Them 10× Faster.

We’re an AI-powered, human-driven organization. Every conversation is with a real person who knows your environment.

As Microsoft rolls out Copilot and AI agents across the 365 ecosystem, we’ll be the ones guiding you through it: deploying, securing, and managing AI so your organization stays ahead.

How It Works

Four Steps to a Unified Tenant

A proven process for enterprise tenant consolidations.

1
Discovery & Planning

We audit both tenants, including users, data, policies, and integrations, and build a detailed migration runbook.

2
Coexistence Setup

Cross-tenant mail flow, GAL sync, and calendar sharing so teams collaborate during the transition.

3
Phased Migration

Users, mailboxes, OneDrive, SharePoint, and Teams, all migrated in controlled waves with validation.

4
Consolidation & Go Live

Domain cutover, source tenant decommission, and unified security. One tenant, one partner.

What Our Clients Say

Real feedback from real organizations.

“Fastest response and resolution time I’ve ever experienced! I’ve had dedicated, professional onsite IT support, and there is no comparison.”
Google Review
Verified Client
“RyanTech is the best option to choose from when it comes to running a business in the Cloud.”
M
Microsoft CIO Applications
Top 25 Microsoft Solution Companies
“RyanTech made our Google-to-Microsoft migration completely painless. We were live in two weeks with minimal disruption.”
JC
James C.
COO, Sacramento Real Estate Firm

Microsoft Partner of the Year Award Winner

Recognized by Microsoft, featured in national publications, and trusted by organizations across the country.

CIOReview
Cloud Migration
Services of the Year 2025
Inc. 5000
Fastest Growing
2024 & 2025
Forbes
Technology
Council Member
CRN
MSP 500
Pioneer 250

Microsoft Solution Designations

Modern Work
Solutions Partner
Infrastructure
Solutions Partner
Security
Solutions Partner
Azure Virtual Desktop
Specialization

Ready to Consolidate Your Tenants?

Fill out the form below and we’ll build your custom tenant migration plan within 24 hours.

Start Your Tenant-to-Tenant Migration

No commitment required.

Not ready yet? Book a free strategy planning session.

3× Partner of Year 250K+ users migrated Zero downtime