Microsoft 365 migration for businesses

Migration to Microsoft 365.

We migrate business email and data to Microsoft 365. We assess the source environment, define the phases of the transfer and coordinate the transition of the new environment into production with the teams responsible for your systems.

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We assess the source data and services before preparing Microsoft 365. We design the transition of email, files and identities, including tests of user access and collaboration within the destination environment before the work is accepted.

The scope of a migration to Microsoft 365 depends on the source platform and the services used by the business. In some projects, the focus is email. In others, the change also involves files, collaboration, users, groups, permissions and the way documents are organised across the business environment.

For email, we can migrate mailboxes to Exchange Online, including messages, folders, calendars, contacts, aliases and shared mailboxes where the source environment and the selected migration method support the transfer of those elements.

For documents, we assess whether the information should be organised in OneDrive for individual users’ files, SharePoint for document libraries and team working areas, or Microsoft Teams for everyday collaboration. We also review permissions, ownership, shared links, older data and structures that should be reorganised as part of the agreed change.

  • Business email: mailboxes, messages, folders, calendars, contacts, aliases and shared mailboxes, according to the capabilities of the source and migration method.
  • Files and documents: folders, shared drives, personal working data and spaces used for collaboration between teams.
  • OneDrive: user files, personal folders, synchronisation and access from the devices included in the project.
  • SharePoint: document libraries, team sites, permissions and the structure used to organise collaborative work.
  • Microsoft Teams: teams, channels, associated files, membership and permissions, subject to the agreed migration scope.
  • Users and security: accounts, groups, roles, licences, access arrangements and Microsoft Entra ID configuration.

Businesses move to Microsoft 365 from a wide range of different platforms. Some use Google Workspace and need to transfer Gmail, calendars, contacts, Google Drive and shared drives. Others operate Exchange Server on premises and want to move to Exchange Online to reduce their dependence on their own email servers.

Migration from older email providers, hosting accounts, webmail, IMAP and POP3 is also common. In these situations, we carefully review which data can be moved from the server and which information is stored on users’ computers, particularly where PST files, POP accounts or local Outlook configurations are involved.

For file projects, we can assess migrations from file servers, NAS devices, shared folders, Dropbox, Google Drive, OneDrive, SharePoint and other systems into OneDrive, SharePoint and Teams, according to the source data and the destination structure required.

Where the source is already Microsoft 365, the project may involve a tenant-to-tenant migration, a common requirement in mergers, acquisitions, business separations, domain changes and the consolidation of multiple tenants into a single destination environment.

One of the most important considerations is the business domain. If the migration includes email, MX, SPF, DKIM, DMARC and Autodiscover records need to be reviewed, along with mail flow and any services associated with the domain. Inadequate DNS planning can cause interruptions, delivery problems or incidents affecting Outlook and other email clients.

Another critical area is users and permissions. Before migration, the business should understand which accounts are active, which groups exist, which shared mailboxes are used, who has delegated permissions, which files are shared externally and which access arrangements should be kept, changed or removed in the destination.

We also review the destination structure. Microsoft 365 provides several ways to organise information, and not all data belongs in the same service. Some information is better suited to OneDrive, other data to SharePoint and other material to Teams. The migration provides an opportunity to organise information, reduce duplication and improve working practices.

Implementation is organised into the following phases. The activities, dependencies and checks for each stage are defined within the scope agreed for the project and the environment involved.

  1. Assessment: review of the source, users, domains, mailboxes, files, permissions and dependencies affecting the migration.
  2. Inventory: data volumes, active services, accounts, groups, shared mailboxes and the organisation of business documents.
  3. Migration plan: scope, tools, schedule, pilot users, cutover window and the criteria used to validate the result.
  4. Preparing Microsoft 365: the tenant, licences, users, domain, Exchange Online, OneDrive, SharePoint and Teams elements included in the project.
  5. Pilot migration: a controlled transfer to validate email, files, permissions and the experience of representative users.
  6. Main migration: phased implementation, monitoring of the transfer and resolution of migration incidents as they arise.
  7. Final cutover: DNS, mail flow, access arrangements, communication and the transition of users to the new services.
  8. Validation: checks of data, mailboxes, files, permissions, services and devices within the agreed scope.
  9. Post-migration support: assistance for users, final adjustments, documentation and recommendations for operating the new environment.

There is no single tool that is suitable for every migration to Microsoft 365. The strategy depends on the source, the data volumes, the types of information, permissions, change windows and the level of service continuity required by the business during the transition.

For some projects, we can use tools within the Microsoft ecosystem, such as the Exchange admin centre, Migration Manager, SharePoint Migration Tool or specific migration features. In other scenarios, specialist third-party tools may be appropriate, particularly for complex migrations, multiple source environments, separate tenants or more advanced monitoring and control requirements.

The important decision is to establish a realistic strategy rather than select a tool by default: what will move, how it will be validated, what needs to be retained or rebuilt, which limitations apply and how the change will be communicated to users throughout the project.

Before starting the migration, the business should decide which data will move, which users will take part in the pilot, how SharePoint will be organised, which files belong in OneDrive, which teams will be created in Teams, which permissions must be retained and which services will be affected during the change.

Internal communication also needs preparation. Users should know when their account will migrate, when they will begin using Outlook, where their files will be located, how they will access Teams and who they should contact if they have questions during the transition.

After migration, we check the sending and receiving of email, calendars, contacts, shared mailboxes, OneDrive, SharePoint, Teams, permissions, external access, devices, Outlook, mobile access and Microsoft 365 applications, according to the services included in the project.

We agree the scope, responsibilities and priorities with your team. We document the work and the checks carried out. Any additional requirement is assessed before it is incorporated into the project or the support service, so that the implications for the agreed work are understood.

Answers to common questions before migrating email, files, users and collaboration data to Microsoft 365. We also provide links to official documentation for readers who want to explore the relevant technical information in greater detail.

It is the process of transferring email, calendars, contacts, files, users, permissions and collaboration data from a source platform into Microsoft 365 services such as Exchange Online, OneDrive, SharePoint, Teams and Microsoft Entra ID, within a scope defined for the project.

Microsoft brings together official guidance on the different scenarios on its page about migration to Microsoft 365.

Yes. We can migrate email from Exchange, Google Workspace, Gmail, IMAP, POP3, Lotus Notes, Zimbra, hosting services and older providers into Exchange Online, using methods appropriate to the source environment and the data involved.

Before migration, we review mailboxes, domains, DNS, aliases, calendars, contacts, rules, shared mailboxes and continuity requirements. Microsoft documents the main ways to migrate email to Microsoft 365.

Yes. We can migrate Gmail, calendars, contacts, Google Drive and shared drives to Microsoft 365, reviewing users, domains, permissions, data volumes and the structure required for collaboration in the destination environment.

Microsoft provides official guidance on how to migrate email, calendars and contacts from Google Workspace to Microsoft 365 and how to migrate Google Workspace files to Microsoft 365 with Migration Manager.

Yes. We can migrate shared folders, documents, user data, team files and business repositories to OneDrive, SharePoint or Microsoft Teams, based on the destination structure and the scope agreed for the project.

Microsoft provides documentation on migrating file shares to Microsoft 365 and on the SharePoint Migration Tool.

Yes. We can assist with Microsoft 365 tenant-to-tenant migrations for mergers, acquisitions, business separations, domain changes, internal reorganisations and tenant consolidation, with the workloads and responsibilities defined for the project.

Microsoft provides official documentation on planning Microsoft 365 tenant-to-tenant migrations.

Yes. In suitable scenarios, we can plan mailbox migrations between Microsoft 365 tenants, reviewing prerequisites, licensing, users, domains, permissions and coexistence requirements before the migration is carried out.

Microsoft documents cross-tenant mailbox migrations, which are used in scenarios such as mergers, acquisitions and business separations where mailboxes need to move between organisations.

This depends on the source, destination, tools and project scope. In some cases, structure, associated files, permissions or particular data can be transferred. In other situations, rebuilding teams and channels may be preferable in order to improve organisation in the destination.

Before committing to the scope, we review which Teams elements can be migrated, which need to be rebuilt and which require a specific approach outside the main transfer process.

This depends on the source platform, the destination and the tools available for the project. In some cases, permissions can be retained. In others, rebuilding them is a more appropriate way to improve security and organisation.

Before migration, we review users, groups, external access, owners, shared mailboxes, folders and libraries to define a consistent permissions strategy for the Microsoft 365 environment.

We plan migrations to reduce interruptions. Many projects use phases, pilot testing, transfers before cutover and a final change window for domains, email or critical data, according to the requirements of the environment.

The duration and impact depend on information volumes, user numbers, the source platform, synchronisation speed, available windows and the complexity of the systems and services involved in the transition.

If email is being migrated to Microsoft 365, the domain, MX, SPF, DKIM, DMARC, Autodiscover and other records related to email and authentication need to be reviewed as part of the migration plan.

We plan the change so that mail flow moves to the new environment in a controlled way, helping reduce problems with message delivery, impersonation protection and the configuration of email clients.

Yes. We can define the scope around your requirements: email, calendars, contacts, files, OneDrive, SharePoint, Teams, shared mailboxes, permissions, groups or particular sets of data that need to be transferred.

During assessment, we help you decide what should be migrated, what should be archived or reorganised and which configurations will need to be rebuilt in Microsoft 365 as part of the destination design.

Yes. After migration, we can assist with validation, incidents, user support, Outlook, Teams, OneDrive and SharePoint configuration, permissions, documentation and recommendations for administering the environment that has been implemented.

We can also assist with introductory user training, collaboration practices and further adjustments to improve security, organisation and adoption of the new environment, where these activities form part of the agreed service.

Tell us about the current platform, the number of users or resources involved and your priorities. We will review the context to define the next steps and the scope of the proposal for your organisation.

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