★ First page of Microsoft's 100,000-partner directory, sorted by responsiveness✓ Microsoft Solutions Partner — Security, Modern Work, Infrastructure, App Innovation, Data & AI● Microsoft partner since 2006◆ 1,100+ organizations under management
IT PartnerMicrosoft Solutions PartnerBook a meeting
Topic hub / 38 guides

Microsoft 365 migration guides

Every migration guide we publish comes from an engagement we ran. Each one names the method, the outage window, what does not carry over, and the fixed-price service with its published price.

Start here

2026-09-27NewExchange Server to Exchange Online: Cutover, Staged, Hybrid or Express? How to Pick the Migration Method for 25 to 500 MailboxesHow to choose cutover, staged, express or full hybrid for an Exchange Server to Exchange Online migration: mailbox limits, downtime, Outlook, public folders.Exchange OnlineMigrationExchange ServerMicrosoft 3652026-06-16NewMigrating from Google Workspace to Microsoft 365Plan a Google Workspace to Microsoft 365 migration with identity, Drive, Groups, DNS, security, cutover, and post-migration controls covered.Microsoft 365Migration2026-06-16NewTenant-to-Tenant Migration After a Merger: A Practical Microsoft 365 and Azure GuidePlan a merger tenant-to-tenant migration across Microsoft 365, Entra ID, Intune, Azure, apps, security, and decommissioning.AzureMicrosoft 365MigrationSecurity

Services that do the work

Fixed-price engagements, quoted in writing before work begins and paid after you approve delivery. Prices are the published catalog prices.

Browse all services

Calculators and plan pages

All 38 guides, newest first

2026-10-11NewCommon Microsoft 365 Migration Challenges and How to Fix Each OneEight Microsoft 365 migration challenges and the number that decides each: the 150-mailbox cutover rule, 50 GB and 250 GB limits, the NCE 7-day window.MigrationMicrosoft 365Exchange OnlineSharePoint2026-10-11NewExchange Server SE and EWS Retirement: Status After 1 October 2026EWS blocking in Exchange Online began 1 October 2026; removal is 1 April 2027. Exchange 2016 and 2019 ESU ends 31 October 2026. What to do now, in order.Exchange ServerExchange OnlineEnd of SupportMigration2026-10-11NewMicrosoft 365 Business Voice to Teams Phone: The Migration ChecklistBusiness Voice is off Microsoft's price list. Map users to Teams Phone with Calling Plan at $17.00 or Teams Phone Standard at $10.00; switch in six steps.Teams PhoneTeamsLicensingMigration2026-10-11NewMicrosoft 365 Migration Readiness Gate: 12 Checks Before You Cut OverA 12-check readiness gate for a Microsoft 365 migration: identity, domain, licenses at list price, mail method, file limits, devices, security and pilot.Microsoft 365MigrationExchange OnlineEntra ID2026-10-11Microsoft 365 Tenant-to-Tenant Migration Guide for 2026Mergers, acquisitions, divestitures, rebranding, and tenant consolidation projects often require moving identities, mail, files, Teams, devices, security…Microsoft 365MigrationEntra IDSecurity2026-10-11Microsoft Teams Phone: PSTN Options, PBX Migration and Rollout PlanningMicrosoft Teams Phone is no longer a new calling experiment—it is a mature cloud calling platform for organizations that want to replace or modernize PBX…Teams PhoneTeamsMicrosoft 365Licensing2026-10-11NewSQL Server 2016 End of Support: ESU, Upgrade, or Azure SQLSQL Server 2016 lost support on 14 July 2026. Compare ESU through Azure Arc to July 2029, an upgrade to SQL Server 2022 or 2025, and Azure SQL.SQL ServerEnd of SupportAzureMigration2026-10-11NewMicrosoft 365 Tenant-to-Tenant Migration: What Moves, What Does NotTenant-to-tenant migration workload by workload: Microsoft's native tools, the two one-time licenses, the 2,000-mailbox and 5 TB limits, what you rebuild.Microsoft 365MigrationExchange OnlineSharePoint2026-10-11NewBenefits of Azure Virtual Machines: When a VM Is the Right AnswerWhat an Azure VM gives a 10-to-500-person business: sizes, hourly billing you can stop, reservations, Hybrid Benefit at 8 cores, and what drives the bill.AzureWindows ServerCostMigration2026-10-05NewExchange Hybrid Coexistence Between Independent Tenants: How It Works, the Limits, and the LicensingTwo Microsoft 365 tenants cannot form an Exchange hybrid. What coexists instead: free/busy, mail routing, address book, Teams, mailbox moves, and licensing.Exchange OnlineMigrationEntra IDMicrosoft 3652026-09-27NewAD FS to Entra ID: Retiring Federation with Staged Rollout, Without a Big-Bang CutoverRetire AD FS with Entra staged rollout: PHS vs PTA, rollout groups and limits, Conditional Access instead of claim rules, SAML apps, and the decommission order.Entra IDSecurityMicrosoft 3652026-09-27NewDropbox or Box to SharePoint and OneDrive: The Migration Playbook for Sharing Links, Team Folders, External Collaborators and CutoverDropbox or Box to SharePoint and OneDrive: what Migration Manager moves and what it does not, team folder mapping, sharing links, guests, dual running, cutover.OneDriveSharePointMigrationMicrosoft 3652026-09-27NewFile Server to SharePoint and OneDrive: What to Move, What to Leave, and How Permissions Survive the TripMigrate a file server to SharePoint and OneDrive: inventory, share-to-site mapping, NTFS permission translation, path and sync limits, what stays on SMB, cost.SharePointOneDriveMigrationWindows Server2026-09-27NewIMAP Email Migration to Microsoft 365 from Rackspace, Zoho Mail, cPanel and GoDaddy Workspace Email: What IMAP Moves and What It Does NotIMAP migration to Microsoft 365 from Rackspace, Zoho, cPanel and GoDaddy Workspace Email: what moves, the limits, the MX cutover order, and the PST pass.Exchange OnlineMigrationMicrosoft 3652026-09-27NewLeaving VMware After the Broadcom Changes: Hyper-V, Azure Local or Azure for a Two-to-Four-Host ClusterWhat Broadcom changed for small VMware customers, with dates, and how a two-to-four-host cluster exits to Hyper-V, Azure Local or Azure.AzureWindows ServerMigration2026-09-27NewMoving the Last On-Premises Servers to Azure: A Three-Server Small-Business Migration, Step by Step, with the Cost DriversA three-server small-business Azure migration, step by step: assessment, landing zone and VPN, replication and cutover, backup, and what drives the bill.AzureWindows ServerMigrationEnd of Support2026-09-27NewOne Microsoft 365 Tenant or Many? Holding Companies, Franchises, PE Roll-Ups and Shared-Services GroupsOne tenant or many for holding companies, franchises and roll-ups: what one tenant cannot separate, what multi-tenant organizations add, and the exit cost.AzureMigrationMicrosoft 365Licensing2026-09-27NewSplitting a Microsoft 365 Tenant After a Divestiture or Carve-Out: The Reverse of a Merger, and the Six Things That Make It HarderSplitting a Microsoft 365 tenant after a divestiture: new tenant, the one-domain rule, NCE licensing mid-term, shared SharePoint and Teams, and TSA coexistence.MigrationLicensingMicrosoft 3652026-09-20NewChanging Your Company Email Domain in Microsoft 365 After a Rebrand: The Order of OperationsHow to change your Microsoft 365 email domain after a rebrand: verify, authenticate, swap addresses and UPNs in batches, keep the old domain as an alias.Microsoft 365Exchange OnlineEntra ID2026-09-20NewThe Domain Cutover in a Microsoft 365 Tenant-to-Tenant Migration: Why It Is the One Unavoidable Outage, and How an MX Spooler Keeps Mail FlowingWhy the domain cutover is the one unavoidable outage in a tenant-to-tenant migration, how long it lasts, and how an MX spooler holds inbound mail.MigrationExchange OnlineMicrosoft 3652026-09-20NewGoDaddy Microsoft 365 Defederation: The Questions Small Firms Ask Before They Start (Whole Tenant, GoDaddy's Role, Downtime, Licenses, What Comes After)What GoDaddy Microsoft 365 defederation changes, why every domain converts, what GoDaddy's part is, why every user gets a new password, licenses and what comes after.MigrationMicrosoft 365Entra ID2026-09-20NewWhat Happens to Microsoft 365 When Your Domain Registration Expires (and the Five Settings That Prevent It)What breaks in Microsoft 365 when a domain registration lapses, what keeps working, the re-registration risk, and the five settings that prevent it.Microsoft 365End of SupportSecurity2026-09-06NewOffice 2016 and 2019 Are Out of Support, Office 2021 Ends on 13 October 2026: Moving to Microsoft 365 Apps Without Breaking AnythingOffice 2016 and 2019 lost support in October 2025 and Office 2021 ends 13 October 2026. Your options and a safe order of work for Microsoft 365 Apps.Microsoft 365LicensingEnd of SupportMigration2026-09-06NewWindows Server 2016 End of Support on 12 January 2027: Upgrade, Migrate or Buy ESUWindows Server 2016 loses support on 12 January 2027. What stops, how ESU works now Azure is no longer free for it, and how to plan the upgrade.Windows ServerAzureLicensingMigration2026-06-16Microsoft Entra app registrations and third-party integrations in tenant-to-tenant migrationsIn a Microsoft 365 tenant-to-tenant migration, mailboxes and files are only part of the story. Identity-integrated apps, enterprise applications, SSO,…Microsoft 365Entra IDMigrationSecurity2026-06-16Microsoft Entra ID guest accounts tenant-to-tenant migrationGuest accounts are often the hidden complexity in a Microsoft 365 tenant-to-tenant migration. In 2026, the right approach is not to “move” Microsoft Entra…Microsoft 365Entra IDMigrationSecurity2026-06-16Microsoft Entra ID user accounts and groups tenant-to-tenant migrationMicrosoft Entra ID user and group objects cannot simply be “moved” from one Microsoft 365 tenant to another. In a 2026 tenant-to-tenant migration,…Microsoft 365Entra IDMigrationSecurity2026-06-16Microsoft Entra Joined Device Tenant-to-Tenant MigrationMigrating Microsoft Entra joined Windows devices, formerly Azure AD joined devices, is not a simple tenant-side move. In 2026, successful endpoint…Microsoft 365MigrationEntra IDIntune2026-06-16Exchange Online Tenant-to-Tenant Migration Guide for 2026Moving Exchange Online mailboxes between Microsoft 365 tenants is no longer just an export-and-import project. A successful 2026 tenant-to-tenant…Microsoft 365Exchange OnlineMigrationEntra ID2026-06-16How to export a Microsoft 365 mailbox to PST using Microsoft PurviewNeed a PST copy of a Microsoft 365 mailbox for legal discovery, offboarding, migration, or a one-time archive? In 2026, the supported admin path is…How-toMicrosoft 365Exchange OnlineCompliance2026-06-16How to Migrate from Microsoft Dynamics GP to Dynamics 365 Business Central in 2026Dynamics GP is still running critical finance operations for many organizations, but Microsoft’s published support timeline makes modernization planning…Dynamics 365MigrationHow-to2026-06-16Microsoft Forms tenant-to-tenant migration: options, limitations, and checklistMicrosoft Forms is often overlooked in Microsoft 365 tenant-to-tenant projects, but surveys, quizzes, registration forms, file-upload questions, Power…Microsoft 365MigrationEntra ID2026-06-16NewMicrosoft-Funded Migration: What to Check Before You BuyCheck Microsoft 365 migration funding eligibility before you buy licenses. See user count, source platform, scope, and CSP approval requirements.Microsoft 365MigrationCSP2026-06-16OneDrive Tenant-to-Tenant Migration: 2026 Planning GuideMoving OneDrive data between Microsoft 365 tenants is no longer just a file copy project. In 2026, a successful OneDrive tenant-to-tenant migration…Microsoft 365OneDriveMigrationSecurity2026-06-16Microsoft Viva Engage tenant-to-tenant migrationViva Engage, formerly Yammer, is often overlooked in Microsoft 365 tenant-to-tenant projects. The content may look like a standalone social network, but…Microsoft 365MigrationEntra ID
Reading about your own tenant? Book 30 minutes with Mike, the founder, or send a note. A person answers the same business day, and every order is confirmed by a human.