Microsoft 365 Migration Services for Businesses
MSAdvance plans and delivers Microsoft 365 migrations from other tenants, Google Workspace, Exchange Server, IMAP, POP and file platforms. We coordinate email, identities, data, collaboration, domains and security through a defined scope and a transition designed to minimize disruption for users.
Target platformWhat is a Microsoft 365 migration?
A Microsoft 365 migration is the project of moving users, email, files, collaboration data and, where applicable, identities and configurations from a source platform into services such as Exchange Online, OneDrive, SharePoint, Teams and Microsoft Entra ID.
Microsoft 365 — still frequently searched for as Office 365 — supports different migration paths. The correct method depends on the source, data volume, workloads, domains, identity model, retention requirements and the available cutover window.
What a professional migration service needs to resolve
A properly defined project should distinguish between data that can be moved directly, configuration that must be recreated and items that need an alternative strategy. This avoids assuming one-to-one equivalence between platforms where none exists.
What are you migrating to Microsoft 365 from?
This page is the main hub for our Microsoft 365 migration services. Each source has different requirements, limitations and tooling, so complex scenarios link to their dedicated technical service page.
Tenant-to-Tenant Migration
For consolidations, reorganizations and tenant changes: Exchange Online, OneDrive, SharePoint, Teams, identities, groups and domains depending on scope and migration method.
Explore tenant-to-tenant migration
Google Workspace
Gmail, Google Calendar, contacts, Drive and Shared Drives with user mapping, permissions and structure handled according to the capabilities of the selected migration method.
Explore Google to Microsoft 365
Exchange Server
Cutover, batch-based or hybrid coexistence approaches depending on the Exchange version, identity model, scale, coexistence requirements and source decommissioning strategy.
Explore Exchange migration
IMAP
Migration of messages and folders available on the IMAP server. Contacts, calendars and tasks are not part of the IMAP protocol and require another route where the source supports export.
Explore IMAP migration
POP / PST
Inventory and consolidation of locally stored email, typically through PST files. Contacts and calendars are reviewed separately where exportable data exists.
Explore POP migration
Dropbox, file shares and legacy platforms
We assess whether content belongs in OneDrive, SharePoint or Teams and which method can move files, metadata and permissions with the required level of fidelity.
Discuss another sourceWhat can be migrated to Microsoft 365 and what needs review
Source platforms do not contain the same objects, and migration tools do not preserve the same attributes. This table summarizes the approach we use during assessment.
| Source / workload | What can usually be migrated | What needs review | Typical target | Status |
|---|---|---|---|---|
| Microsoft 365 tenant-to-tenant | Email, OneDrive, SharePoint and other supported workloads depending on the method. | Teams, chats, apps, Planner, Power Platform, Intune, retention, domains and integrations. | Target Microsoft 365 tenant | By workload |
| Google Workspace | Gmail, Calendar, Contacts, My Drive and Shared Drives depending on tooling. | Permissions, links, Google Sites, automation, native formats and items without a one-to-one equivalent. | Exchange Online, OneDrive and SharePoint | By object |
| Exchange Server | Mailboxes and Exchange content through supported Microsoft migration methods. | Hybrid coexistence, public folders, SMTP applications, relay, archives, retention and server decommissioning. | Exchange Online | Supported |
| IMAP | Email messages and folders available through IMAP. | Rules, signatures, permissions, contacts, calendars and tasks. | Exchange Online | |
| POP / PST | Messages and folder structure present in PST files or other exportable data. | Data distributed across devices, contacts, calendars, duplicates and local archives. | Exchange Online | By export |
| Dropbox / file shares | Files and folders; selected metadata and permissions depending on the method. | Target information architecture, ownership, links, external permissions, paths and unsupported names. | OneDrive / SharePoint / Teams | By design |
| Applications and integrations | No automatic “migration” should be assumed. | SSO, OAuth, Graph, SMTP, Teams apps, flows, connectors, bots and configuration. | Reconfiguration or recreation | Assessment |
Important: “Migratable” does not necessarily mean that an item can be moved with one tool or recreated identically. Final scope is documented by workload and migration method.
How we migrate to Microsoft 365: 7 phases from discovery to validation
The duration and migration method vary, but the discipline does not: discovery, assessment, design, preparation, pilot or pre-stage where appropriate, cutover and validation. Separating these phases prevents the change window from becoming the moment when dependencies are first discovered.
Can Microsoft 365 be migrated with no downtime? What user impact to expect
A well-designed migration moves as much work as possible outside the final change window. Some services may still require read-only periods, reauthentication, profile changes, DNS propagation or changes in how users access resources.
Which tools do we use for Microsoft 365 migrations? Native, specialist and automation
There is no universally best migration tool. We select the method according to workload, source, volume, required fidelity, coexistence, reporting requirements and project constraints.
Microsoft-native migration capabilities
Microsoft provides specific migration routes for different scenarios. Current Microsoft 365 documentation includes cross-tenant mailbox, OneDrive and SharePoint capabilities, Microsoft 365 Migration Orchestrator and Migration Manager for supported sources.
Specialist migration platforms
Where the project needs additional pre-staging, reporting, automation, workload coverage or flexibility beyond the native path, we can use specialist migration platforms.
PowerShell and Microsoft Graph
Automation helps prepare objects, normalize attributes, generate inventories, validate configuration, reconcile results and handle tasks that should not be performed manually at scale.
How we protect access and data during a Microsoft 365 migration
Project preparation includes how permissions are granted, how long they remain active, which tools receive access and how temporary access is removed when the engagement ends.
How much does a Microsoft 365 migration cost?
User count is useful, but it does not define the budget by itself. Data volume, workloads, shared mailboxes, sites, Teams, permissions, domains, tooling, identity, retention, applications and cutover complexity can all affect the final scope.
Exchange Online mailbox
Reference price for a standard user mailbox scope. OneDrive, SharePoint, Teams and additional workloads are sized separately by component.
View T2T pricingGmail mailbox
Reference price for a standard email scope. Drive, Shared Drives, permissions and other components depend on volume and structure.
Explore Google migrationExchange mailbox
Hybrid architecture, directory synchronization, public folders, relay, applications and source decommissioning can expand the scope.
Explore Exchange migrationIMAP mailbox
Reference price for IMAP email and folder migration. Contacts and calendars are not migrated through IMAP itself.
Explore IMAP migrationWhat information do we need to scope the migration?
You do not need a perfect inventory before contacting us. These details, however, allow us to move from a generic estimate to a technical and commercial scope that can be properly defended.
800 users and ~12 TB consolidated into a single Microsoft 365 tenant
In a tenant-to-tenant migration following a merger, MSAdvance coordinated Exchange Online, OneDrive, SharePoint, Teams, Entra ID, applications, permissions and the corporate domain. The published case also covers retention, throttling, OneNote, Teams and SSO applications.
The purpose of the case study is not to imply that every migration takes the same amount of time. It shows how a structured migration methodology behaves when data volume, dependencies and a demanding cutover window are involved.
Risks and limitations of a Microsoft 365 migration
A strong proposal should also explain what can block, slow down or expand the project. These are some of the areas we review before committing to dates and responsibilities.
Guides, comparisons and official documentation for planning your migration
The service page explains the overall approach. For detailed technical decisions, we link to our migration guides and Microsoft's official documentation.
Microsoft 365 Migration Guide
Assessment, architecture, security, email, files, cutover, validation and post-migration activities.
Read the complete guideWhat can be migrated between Microsoft 365 tenants?
Workloads, limitations, native Microsoft capabilities, specialist tooling and components that need recreation.
Read the technical analysisOfficial Microsoft 365 migration documentation
Migration routes, cross-tenant capabilities, Migration Orchestrator, Migration Manager and workload-specific guidance.
Open Microsoft LearnMigration Manager for Google Workspace
Official Microsoft documentation for scanning and migrating supported Google content into OneDrive and SharePoint.
Open documentationWhat IMAP does and does not migrate
Microsoft documents that IMAP migration moves email messages but not contacts, calendars or tasks through the protocol itself.
Open Microsoft LearnMigration performance and throttling
Factors affecting throughput, service limits and planning for Exchange Online mailbox migration.
Read best practicesCommon questions about Microsoft 365 migration services
These answers summarize common scenarios. Final scope always depends on the source platform, data and the capabilities of the selected migration route.
How much does a Microsoft 365 migration cost?
Cost depends on user and mailbox counts, data volume, source platform, workloads, sites, Teams, domains, identity, tooling, retention, applications and cutover complexity. We publish indicative “from” pricing for standard scopes, but the final quotation is prepared after assessment.
How long does a Microsoft 365 migration take?
There is no reliable duration based on user count alone. Data volume, workload mix, throttling, migration waves, source bandwidth and dependencies all matter. For significant projects, we estimate timing after assessment and validate throughput with a pilot or initial batch.
Can Microsoft 365 be migrated with zero downtime?
The objective is to minimize disruption, but we do not promise zero downtime universally. Some workloads may require read-only periods, reauthentication, DNS propagation, profile changes or a cutover window. Expected impact is documented for the specific scenario.
What data can be migrated to Microsoft 365?
Depending on the source, migration can include email, calendars, contacts, files, OneDrive, SharePoint and Teams. Not every workload has a one-to-one equivalent, and some components need to be recreated or reconfigured. The final workload matrix is confirmed during assessment.
Does IMAP migrate contacts and calendars?
No. Microsoft documents that IMAP migration moves email messages and folders, but not contacts, calendars or tasks through IMAP. Where the source supports export, separate import processes can be assessed.
What happens to the domain and email during cutover?
The target tenant is prepared in advance and the project coordinates MX, SPF, DKIM, DMARC, Autodiscover, aliases, mail flow and, where required, domain release or transfer. The exact sequence depends on whether the domain is retained, changed or moved between tenants.
Does MSAdvance use Microsoft-native or third-party migration tools?
Both. Microsoft provides native migration capabilities for multiple workloads and sources. Where the project requires additional functionality, we can use Quest, AvePoint, Cloudiway, BitTitan or ShareGate. PowerShell and Microsoft Graph support preparation, automation and validation.
Do you need administrator credentials to prepare a quote?
Not for the initial conversation. If a deeper technical assessment later requires access, we define the roles needed and how they should be granted. We do not ask for administrator passwords through the public contact form.
Are Microsoft 365 licenses included in the migration price?
They are not considered included unless the proposal states otherwise. The same applies to migration licenses and third-party tooling. The quotation should separate professional services, licensing and additional complexity.
Can MSAdvance handle only part of the migration?
Yes. We can deliver the full project or take responsibility for a specific workstream such as Exchange, OneDrive, SharePoint, Teams, identity, domains or cutover while coordinating with the customer's IT team and other providers.
Request a proposal for your Microsoft 365 migration
Share the source platform, approximate user count, mailboxes, files, OneDrive or Drive, SharePoint, Teams, domains and any relevant dependencies. We will review the scenario and identify what information is missing, which risks should be assessed and how we would structure the project.
