Microsoft 365 Migration

We specialize in Microsoft 365 migration: moving email, files, applications, and collaboration workloads to the Microsoft cloud with maximum security and zero downtime.

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Assessment & Analysis

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Planning & Design

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Deployment & Validation

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Migrating to Microsoft 365 has never been easier

MSAdvance is a leader in Microsoft 365 migrations and tenant-to-tenant migrations, ensuring zero downtime and no loss of productivity.

We consolidate mailboxes, Teams, OneDrive, SharePoint and other M365 services, preserving permissions, history and critical data at every stage.

Our methodology leverages Quest On Demand Migration, BitTitan MigrationWiz and Azure AD Connect, enhanced with PowerShell and Microsoft Graph API automation. With over 25 Microsoft certifications and Advanced Specializations, our team ensures security, regulatory compliance and full visibility throughout the entire process.

More than 500 international companies have already trusted MSAdvance to migrate and optimize their M365 environment.

0h

of downtime

100%

data preserved

Get a quote

Microsoft 365 Migration Sources

At MSAdvance, we provide Microsoft 365 migration services from multiple sources, ensuring maximum efficiency and business continuity. Our expertise in tenant-to-tenant migrations and hybrid scenarios guarantees a seamless transition to the Microsoft Cloud.

Microsoft 365 Tenant-to-Tenant Migration

We handle tenant-to-tenant migrations by coordinating the transfer of mailboxes, Teams, OneDrive and SharePoint. With Quest On Demand and BitTitan MigrationWiz we manage users and groups in Azure AD, ensuring every workload runs seamlessly during the transition.

Google Workspace Migration

When migrating from Google Workspace, we transfer Gmail, Google Calendar, Contacts, Drive files and Shared Drives to the Outlook/M365 environment. Our automated processes preserve labels, filters and Shared Drive structure, guaranteeing a familiar user experience in Microsoft 365.

Exchange Migration

For Exchange Server (2007–2019) or Exchange Online tenants, we plan mailbox, calendar and contact migrations step by step. Using specialized tools, we replicate folders while maintaining permissions, rules and shared address books. Once data integrity is validated, we safely decommission legacy servers.

IMAP Migration

For email hosted on IMAP servers (Dovecot, Zimbra, Courier…) and hosting providers such as IONOS, we use automated solutions that connect to the current system and migrate folders, messages and metadata into Exchange Online.

POP Migration

In POP environments, we export inboxes to PST files and import them into Exchange Online. For contacts and calendars we provide CSV templates or custom scripts to streamline the import. While POP does not preserve folder structure, we ensure essential emails and data are available in Outlook from day one.

Other Sources

MSAdvance also migrates from less common sources such as custom-built corporate mail servers, legacy systems and on-premises solutions. We design a tailored process to extract emails, contacts and calendars while adapting permissions and configurations to Microsoft 365 without compromising data integrity or security.

With MSAdvance, every migration source comes with a personalized plan, pre-migration testing and expert support, ensuring that your Microsoft 365 environment is ready to boost productivity, collaboration and security from day one.

Migración Microsoft 365 Microsoft 365 Migration

Microsoft 365 Cross-Tenant Migration

Migrate users, email, Teams, SharePoint, and OneDrive with zero downtime.

Consolidate your Microsoft 365 environment by unifying Exchange Online, Teams, SharePoint, and OneDrive with full business continuity. Ideal for mergers and acquisitions or subsidiary consolidation, while preserving identities, permissions, and compliance.

  • Discovery and design: user, domain, and workload inventory; coexistence planning, DNS configuration, and end-user communication.
  • Certified tools: Quest On Demand Migration, BitTitan MigrationWiz, and Microsoft Entra ID Cross-Tenant Sync with PowerShell and the Microsoft Graph API.
  • Seamless cutover: parallel replication, delivery testing, and off-hours execution to ensure zero downtime.
  • Security and control: encryption, permission preservation, and validation reports for audit readiness.

With over 200 successful tenant-to-tenant migrations, we help you unify Microsoft 365 securely and with complete control over every step of the migration process.

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Migración Google Workspace a Microsoft 365 google workspace to microsoft 365 migration

Migrate from Google Workspace to Microsoft 365

Migrate Gmail, Calendar, Drive, Contacts, and Sites to Outlook, OneDrive, SharePoint, and Teams without disruption.

Move email and documents from Google Workspace to Microsoft 365 while preserving structure, metadata, and productivity. We convert labels into folders, migrate Shared Drives, and maintain permissions for a frictionless adoption.

  • Full scope: Gmail, Google Calendar, Drive, Shared Drives, Contacts, and Sites.
  • Technology: BitTitan MigrationWiz, Microsoft Graph API, and automation with PowerShell.
  • User experience: recreation of essential rules, identity mapping, and change management support.
  • Secure cutover: off-hours execution, validation, and consistency reporting.

With over 150 successful Google Workspace migrations, accelerate your Microsoft 365 adoption with zero risk.

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Migración Exchange Server a Microsoft 365 Exchange Server to Microsoft 365 migration

Migrate Exchange Server to Microsoft 365

Migrate mailboxes, calendars, and contacts from Exchange 2007–2019 to Exchange Online with full continuity.

We design a phased strategy for your Exchange Server On Premise environment to Exchange Online migration, ensuring coexistence, synchronization, and a seamless cutover with no downtime or data loss.

  • Hybrid coexistence: HCW configuration, Directory Sync, Autodiscover, and transport policies.
  • Replication and testing: batch migrations, calendar/resource validation, and delivery testing.
  • DNS optimization: MX, SPF, DKIM, and DMARC updates for a transparent transition.
  • Secure decommissioning: retiring the source server and providing final documentation for audit readiness.

Proven expertise in Exchange Server → Microsoft 365 projects, with a strong focus on security and compliance.

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migración IMAP a Microsoft 365 IMAP to Microsoft 365 migration

Migrate IMAP to Microsoft 365

Transfer emails, folders, and metadata from IMAP (Dovecot, Zimbra, Courier, cPanel/IONOS) to Exchange Online without business disruption.

We securely connect to your IMAP server and synchronize messages and folders to Exchange Online, preserving dates, flags, and folder structure. A planned cutover during off-hours ensures zero downtime.

  • Technical discovery: mailbox audit, quotas, and authentication (OAuth/App Passwords).
  • Parallel synchronization: controlled batches, integrity checks, and error correction.
  • Outlook readiness: validation of rules, signatures, and auto-archiving.
  • Security: in-transit encryption and per-mailbox validation reports.

With over 1,000 successful IMAP migrations, centralize your email in Microsoft 365 quickly and securely.

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migración POP a Microsoft 365 pop to microsoft 365 migration

Migrate POP to Microsoft 365

Export PST and import email, contacts, and calendars into Exchange Online with minimal friction.

For POP environments, we consolidate critical data into Exchange Online through PST, including contacts and calendars. Execution is carefully planned to avoid disruption.

  • Initial assessment: review of email clients, mailbox sizes, and archiving requirements.
  • Controlled process: PST export/validation and assisted cloud import.
  • Outlook enablement: ready-to-use profiles from day one with Autodiscover.
  • Overnight cutover: DNS updates and access verification with zero downtime.

With over 150 successful POP migrations, move your email to Microsoft 365 seamlessly and without complications.

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Migración Microsoft 365 Microsoft 365 Migration

Migrate from Legacy or Other Platforms to Microsoft 365

Extract emails, contacts, and calendars from legacy or on-premises systems into Exchange Online, OneDrive, and SharePoint.

MSAdvance designs tailored processes for non-standard platforms, preserving permissions and configurations. Parallel synchronization and off-hours cutover ensure continuity and security.

  • Custom assessment: analysis of source systems, connectors, formats, and retention policies.
  • Automation: PowerShell scripts and Microsoft Graph API for mapping and bulk uploads.
  • Governance: adaptation of aliases, rules, domains, and security labeling.
  • Comprehensive validation: functional testing, reporting, and final project documentation.

With more than 30 projects from custom sources, modernize your cloud platform with reliability and control.

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Assessment & Analysis

We start by understanding your starting point and minimizing risks. We carry out a practical assessment that aligns objectives, clarifies the real scope, and confirms the technical feasibility of moving to Microsoft 365.

  •   Source discovery: we inventory mailboxes, domains, and workloads (email, files, and collaboration) across Google Workspace, Exchange/IMAP/POP, on-premises, or the source tenant, identifying dependencies and special requirements.
  •   Technical feasibility: we run connectivity and throughput tests, controlled pilots, and validate authentication (OAuth/MFA/SSO) and permissions. Secure service credentials are prepared in advance.
  •   Risks and compliance: we map retention/eDiscovery, security policies, devices, and DNS configuration (MX, SPF, DKIM, DMARC), defining mitigation measures.

Architecture Planning & Design

With the assessment approved, we design the target architecture and the migration strategy, prioritizing business continuity and security.

  •   Target architecture in M365: Microsoft Entra ID, Exchange Online, OneDrive, SharePoint Online, and Teams aligned with governance and licensing.
  •   Migration strategy: we define the pre-stage and schedule delta windows (execution takes place in the Deployment phase), as well as the cutover window outside business hours and the documented rollback plan.
  •   Governance & security: sensitivity labels, DLP, RBAC, Conditional Access, MFA, and Defender for Office 365, along with retention and sharing policies.
  •   Target environment preparation: domain and license verification, Autodiscover, and MX/routing plan.
  •   Certified tools: Quest On Demand Migration, BitTitan MigrationWiz, and Entra Connect / Entra ID Cross-Tenant Sync, with PowerShell and Microsoft Graph automation when it adds efficiency.

Implementation & Validation

We execute in parallel with daily operations, applying quality controls at every batch. Progress is communicated, the cutover window is carried out without noticeable interruptions, and we conclude with a final audit.

  •   Target provisioning: accounts and groups in Entra ID, licenses, sites/Teams, and application of policies (retention, DLP, Conditional Access).
  •   Pre-stage and delta migrations: initial replication (pre-stage) and scheduled delta passes until the cutover window, ensuring consistency and minimal queue times.
  •   Data migration to M365:
    •   Email → Exchange Online: mailboxes, calendars, contacts, and essential rules; delivery and availability (free/busy) validation.
    •   Files → OneDrive/SharePoint: structure, metadata, and permissions; conflict resolution and owner mapping.
    •   Collaboration → Teams: channels, memberships, and configuration; coordinated with owners for adjustments.
  •   Cutover window: DNS changes (MX/SPF/DKIM/DMARC), end-to-end validation, and intensive post-migration support.
  •   Closure and audit: reconciliation of counts and permissions, final documentation, and secure decommissioning of the source environment.

Migration Plans & Pricing for Microsoft 365

At MSAdvance, we deliver tailored Microsoft 365 (Office 365) migration plans for Tenant-to-Tenant, Google Workspace, Exchange, and IMAP/POP scenarios, with minimal downtime. Every project includes a detailed assessment, a pre-stage + delta strategy, off-hours cutover, DNS adjustments (MX, SPF, DKIM, DMARC), comprehensive end-to-end validation and hyper-care support, all with a strong focus on security and compliance (GDPR). Pricing is available “per user” with volume discounts.

Logo Microsoft

Microsoft 365 Tenant-to-Tenant Migration

From 25€/ mailbox

Ideal for mergers and acquisitions.

  • Exchange, OneDrive, SharePoint, and Teams (channels & memberships)
  • Pre-migration + delta and off-hours cutover
  • Identity mapping and permission preservation
  • Entra ID Cross-Tenant Sync + Quest On Demand Migration
  • DNS adjustments: MX, SPF, DKIM, DMARC
Get a quote
Migración Google Workspaces

Google Workspace to Microsoft 365 Migration

From 12€/ mailbox

Seamless migration of Gmail, Drive, and Shared Drives.

  • Gmail, Calendar, Contacts, Drive, and Shared Drives
  • Label-to-folder conversion with metadata retention
  • Parallel replication and overnight cutover
  • Identity mapping and Drive permission preservation
  • DNS adjustments: MX, SPF, DKIM, DMARC
Get a quote
Migración Exchange Online

Exchange Server to Exchange Online Migration

From 20€/ mailbox

Hybrid coexistence and controlled transition.

  • Mailboxes, calendars, contacts, and resources (optional PST)
  • HCW, directory sync, and staged batches to EXO
  • Calendar/resource validation and GAL preservation
  • Secure decommissioning of the source server
  • DNS adjustments: MX, SPF, DKIM, DMARC
Get a quote
Migración IMAP

IMAP to Microsoft 365 Migration

From 10€/ mailbox

Email and IMAP folder migration with minimal disruption.

  • Supported sources: Zimbra, Dovecot, Courier, cPanel/IONOS, etc.
  • Preserve structure, dates, senders, and basic flags (read/unread)
  • Parallel replication (pre-stage) + delta; off-hours cutover
  • Contacts and calendars via export/import (CSV/ICS)
  • DNS adjustments: MX, SPF, DKIM, DMARC
Get a quote

Note: Prices are “from” per user with volume discounts available. Amounts are exclusive of VAT and apply to standard migration scopes. Third-party tool licenses and additional complexity (eDiscovery, retention, apps/integrations) are not included. Final scope and budget are confirmed after the assessment.

Frequently Asked Questions about Microsoft 365 Migration

What does a Microsoft 365 migration cost (per user, per GB, or by migration type)?
How do you keep mail flowing during a domain change (coexistence & redirects)?
What are the phases of a Microsoft 365 migration project?
Which data is migrated to Microsoft 365 (mail, calendars, contacts, files & collaboration)?
Which tools and methods ensure a reliable Microsoft 365 migration?
What limits or throttling can affect migration throughput?
How do you migrate OneDrive between tenants without losing versions and permissions?
Can you migrate SharePoint Online between tenants with versions and permissions intact?
What are the advantages of migrating with a specialized Microsoft partner?

Key Advantages of Partnering with MSAdvance

With our expertise in Microsoft 365 and Azure, your company gains cloud solutions with:

  • Certified Expertise: 25+ Microsoft certifications and Advanced Specializations.
  • Customized Strategy: A tailored roadmap designed to match your unique business vision and goals.
  • High Availability: Resilient designs with a guaranteed 99.9% SLA.
  • Comprehensive Security: End-to-end protection with Zero Trust, Defender, Sentinel, and Purview.