Microsoft Solutions PartnerMicrosoft 365 Migration Services
Since 2016, we have migrated 1.4 million users to Microsoft 365. As a Microsoft Solutions Partner, we migrate your organization's emails, files, calendars, and applications from on-premises systems or other cloud platforms to Microsoft 365 — with zero data loss, zero downtime, and guaranteed results.
Key Components
Migrate mailboxes, calendars, contacts, and rules from Exchange Server, Google Workspace, IMAP, or any email platform to Exchange Online. Includes shared mailboxes and distribution lists.
Email migration detailsMigration Approaches
Email Migration to Microsoft 365
We move your mailboxes, calendars, contacts, distribution lists, and mail rules to Exchange Online. Every email — sent, received, drafted, archived — lands in the right folder with timestamps and read status intact.
We pre-stage your data days before the cutover using delta syncs, then capture final changes in a 2-4 hour window — typically over a weekend. Users open Outlook on Monday and everything is there.
Supported source platforms
What moves to Exchange Online
Mailboxes & Archives
Primary, shared, room, and equipment mailboxes up to 100 GB each
Calendars & Contacts
Appointments, recurring events, contact groups, and delegates
Distribution Lists
Groups, dynamic distribution lists, and mail-enabled security groups
Mail Rules & Signatures
Server-side transport rules and per-user Outlook rules
Public Folders
Organization-wide public folder hierarchies and permissions
Tenant-to-Tenant Migration
Mergers, acquisitions, divestitures, and rebranding — we consolidate or split Microsoft 365 tenants without disrupting your team. Mailboxes, OneDrive, SharePoint, Teams, and Entra ID objects move to the target tenant with full data integrity.
Cross-tenant migrations require third-party tooling (BitTitan, Quest, or ShareGate) and careful identity planning. We handle tool procurement, domain cutover sequencing, and coexistence configuration so both organizations operate normally throughout the project.
Workloads we migrate between tenants
Typical M&A migration timeline
Discovery & Identity Mapping
Inventory both tenants, map users, plan domain cutover sequence
Coexistence Setup
Cross-tenant sharing, unified GAL, free/busy federation
Batch Migration
Move mailboxes, OneDrive, SharePoint in scheduled batches
Domain Cutover & Cleanup
Transfer domains, update UPNs, decommission source tenant
IMAP platforms we migrate from
If your server supports IMAP, we can migrate it. No exceptions.
IMAP Migration to Microsoft 365
We migrate email from any IMAP-compatible server to Exchange Online. cPanel, Plesk, Zimbra, Postfix, GoDaddy, Rackspace — if your server speaks IMAP, we move the mail.
IMAP migrations transfer email content only — calendars and contacts require separate handling through CSV export or third-party tools. We handle DNS changes (MX, SPF, DKIM, DMARC, Autodiscover) and verify mail flow before decommissioning the old server.
IMAP limitation
IMAP protocol transfers email only. Calendars, contacts, and tasks must be exported separately. We handle this as part of every IMAP project — no surprises.
Cloud-to-Cloud Migration
We migrate your organization from Google Workspace, AWS WorkMail, Zoho Mail, or any cloud platform to Microsoft 365. Email, files, calendars, contacts, and shared drives — everything transfers with full fidelity.
Cloud-to-cloud moves are our fastest migration type. No hardware dependencies, no firewall configurations, no VPN tunnels. We connect directly to your source cloud via API and stream data to Microsoft 365 at full speed. Most organizations are fully operational on M365 within two weeks.
- Google Docs → Word/Excel/PowerPoint (automatic conversion)
- Gmail labels → Outlook folders and categories
- Google Shared Drives → SharePoint document libraries
- Google Calendar → Exchange Online calendars
- Google Sites → SharePoint Modern sites
Cloud-to-cloud migration process
API Connection
We connect to your source cloud via admin API — no software to install
Pre-stage Data
Bulk data transfer runs in the background while your team works normally
Delta Sync
We capture all changes made since the pre-stage began
DNS Cutover
MX records point to Microsoft 365 — mail flows to new mailboxes immediately
Verification
SHA-256 hash verification on every item confirms complete data transfer
Security & compliance configuration
Entra ID (Azure AD)
Hybrid sync, SSO, Conditional Access, PIM
Multi-Factor Authentication
Microsoft Authenticator, FIDO2, phone sign-in
Intune Device Management
Autopilot, compliance policies, app deployment
Data Loss Prevention
DLP rules, sensitivity labels, retention policies
Microsoft Defender
Defender for Office 365, Safe Links, Safe Attachments
Compliance Center
eDiscovery, audit logging, HIPAA / SOC 2 / GDPR controls
Identity & Security Setup
We configure Entra ID, Conditional Access, MFA, Intune, and Data Loss Prevention as part of every migration. Your tenant is production-ready and compliant before the first user signs in.
Most failed migrations skip security. MFA is off. External sharing is unrestricted. DLP rules do not exist. We deploy every tenant with a security baseline that meets HIPAA, SOC 2, and GDPR requirements out of the box — then customize from there.
Cutover Migration
All mailboxes migrate at once in a single batch. We schedule the cutover for a weekend, move every mailbox to Exchange Online, update DNS records, and verify data integrity before Monday. Best for organizations with fewer than 150 mailboxes on Exchange Server 2010 or later.
Best for
Under 150 mailboxes
Source
Exchange Server 2010–2019
Downtime
Weekend cutover (2-4 hours)
Timeline
1-2 weeks end to end
Hybrid Migration
Run Exchange Server and Exchange Online side by side. Users migrate in batches while both systems share a unified address book, free/busy calendar data, and seamless mail flow. Zero downtime, zero disruption. The standard approach for large enterprises with 150+ mailboxes.
Best for
150+ mailboxes, enterprises
Source
Exchange Server 2010–2019
Downtime
Zero — full coexistence
Timeline
2-8 weeks depending on scale
Staged Migration
We migrate users in planned batches over days or weeks. Each batch is verified before the next begins. This gives your IT team time to validate, train users, and resolve issues incrementally — without the pressure of a single-weekend cutover.
Best for
150-2,000 mailboxes
Source
Exchange Server 2003–2007
Downtime
Per-batch only (minutes)
Timeline
2-6 weeks
Calculate Your Migration Cost
Get an instant estimate based on your source platform, data types, and number of users. No email required.
Migration Cost Calculator
Microsoft 365 migration cost per user
Why 1,400+ Organizations Choose Medha Cloud
Real results from aerospace, fintech, logistics, government, and banking — each with different source systems, compliance requirements, and timelines.
Gopalan Aerospace
Aerospace Manufacturing
Google Workspace → Microsoft 365
188 users with 2TB of engineering documentation and CAD files. Migration completed in 3 days around AS9100 audit schedule with zero disruption.
"Our CAD files and engineering docs transferred without a single formatting issue. The team did not miss a single deadline during the switch." — VP Engineering, Gopalan Aerospace
188
Users
3 days
Timeline
0
Data Loss
Giift
Technology / Fintech
Tenant-to-Tenant Migration
257 users across Singapore, Malaysia, India, and Dubai consolidated into a single M365 tenant during acquisition. All Teams, SharePoint, and OneDrive data transferred.
"We had four countries on different tenants after the acquisition. Medha consolidated everything in one week. Our teams collaborate like they have been on one platform for years." — CTO, Giift
257
Users
1 week
Timeline
4
Countries
Trans Global India
Logistics
GoDaddy → Microsoft 365
180 users on GoDaddy email with storage and reliability issues. Moved to Exchange Online in 2 days without disrupting 24/7 logistics operations.
"We run 24/7 logistics across three continents. There was zero downtime during the migration. Email just started arriving in Outlook instead of GoDaddy." — IT Head, Trans Global India
180
Users
2 days
Timeline
0
Downtime
Central Government Department
Government
Exchange Server → Microsoft 365
8,000+ mailboxes on legacy Exchange 2013. Strict security and compliance requirements with zero tolerance for data exposure. Phased rollout over 4 weeks with full audit trails.
"The compliance requirements were non-negotiable. Medha delivered a phased migration with complete audit trails for every mailbox. We passed our security review without a single finding." — CISO, Government Department
8,000+
Mailboxes
4 weeks
Timeline
100%
Compliance
KDCC Bank
Banking & Finance
IMAP → Microsoft 365
95 mailboxes with 10 years of transaction emails and customer communications. RBI compliance maintained throughout. Zero disruption to banking operations.
"Ten years of transaction emails — every single one accounted for. The RBI auditors were satisfied with the integrity verification reports Medha provided." — IT Manager, KDCC Bank
95
Mailboxes
2 days
Timeline
100%
Integrity
What sets us apart
- SHA-256 hash verification on every migrated item
- Microsoft Solutions Partner with direct escalation channels
- Delta syncs — 2-4 hour weekend cutover, not days
- Full user training included with every project
- 30-day post-migration support standard
- Failed migration remediation — we fix what others broke
1.4M+
Users Migrated
99.8%
Success Rate
0
Data Loss
From First Call to Fully Operational — 5 Steps
Every project follows the same proven methodology. No surprises, no scope creep, no missed deadlines.
Discovery & Environment Audit
1-3 days
We inventory your current email system — mailbox count, sizes, dependencies, third-party integrations — and build a detailed migration plan with risk mitigation for every identified issue.
Tenant Preparation
3-5 days
We provision your M365 tenant, configure domains, set up Entra ID, deploy security baselines (MFA, Conditional Access, DLP), and prepare Exchange Online for incoming data.
Pilot Migration
1-2 days
10-20 pilot users migrate first. We validate data integrity, test Outlook profiles, verify mobile access, and confirm mail flow before touching the rest of the organization.
Production Cutover
1-5 days
Users migrate in scheduled batches with 24/7 monitoring. Delta syncs capture changes in real time. DNS cutover happens during off-hours. Most users never notice the switch.
Verification & Support
30 days included
SHA-256 verification confirms every item transferred. User training sessions run the first week. Our team handles issues for 30 days post-cutover — Outlook profiles, mobile setup, mail flow, the works.
Frequently Asked Questions
How long does a Microsoft 365 migration take?
Will there be downtime during the migration?
Is there any risk of data loss?
What happens if something goes wrong?
What data do you migrate?
Can you handle large mailboxes (50GB, 100GB+)?
What email platforms do you migrate from?
Do you provide training?
How much does a migration cost?
Ready to migrate to Microsoft 365?
30-minute environment assessment. Custom project plan within 24 hours. SHA-256 verified data integrity on every item.
Cloud Migration Strategies & Step-by-Step Guides
Google Workspace to Microsoft 365 Migration: The Complete 2026 Playbook (Gmail, Drive, and Shared Drives)
A step-by-step migration playbook for moving from Google Workspace to Microsoft 365 covering Gmail to Exchange Online, Drive to OneDrive/SharePoint, identity migration, DNS configuration, and post-migration security — with tool comparisons and timeline estimates.
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