Full Cutover G Suite to Microsoft 365 Migration — Email, Calendar, Contacts & Tasks Cutover
This service is a full cutover migration from G Suite (Google Apps) to Microsoft 365. IT Partner moves mailboxes with email, contacts, calendars, and tasks to Exchange Online. Google Drive data is not included in this SKU; Drive migration is a separate SKU. If you only need mailbox migration, you should order IMAP migration from G Suite to Microsoft 365.
What this engagement is
IT Partner plans and performs a full cutover migration from G Suite to Microsoft 365, including email, contacts, calendars, and tasks. The migration uses a special utility that allows IT Partner to move mail data, calendars, contacts, tasks, and other in-scope information in the shortest time while avoiding possible errors during manual data transfer. The project is considered successful when all in-scope user email, contacts, calendars, and tasks are fully migrated from Gmail and G Suite to the Microsoft 365 tenant.
Success criteria
What you receive
How the work unfolds
IT Partner confirms the migration scope, participating users, source and destination access, communication plan, cutover timing, known constraints, and the customer point of contact. The team also reviews client responsibilities such as DNS access, user notifications, and cutover readiness.
IT Partner reviews the G Suite environment for migration readiness, including administrative access, enabled IMAP access, contact, calendar, and task services, user list, mailbox sizes, and high-risk users such as executives, VIP users, or users with unusually large mailboxes or deleted item folders.
IT Partner prepares Microsoft 365 identities for the migration by creating and configuring destination users or, where applicable, assisting with AD Connect configuration. Required Exchange Online licenses are assigned so mailbox targets are available before migration starts.
IT Partner configures the migration utility and starts the initial migration pass for Gmail mailbox data, calendars, contacts, and tasks to Exchange Online. Migration progress and errors are monitored so issues can be reviewed before cutover.
IT Partner validates that migrated mail, calendar, contacts, and task data are landing in the correct Microsoft 365 user profiles. The team reviews migration reports, checks for failed or skipped items, and identifies remediation actions for in-scope migration issues.
At the agreed cutover time, the client performs the required DNS changes, including updating the MX record so inbound mail routes to Exchange Online. IT Partner verifies Microsoft 365 mail flow, Exchange Online Protection behavior, and any required transport rules after DNS propagation begins.
IT Partner performs a final synchronization pass to capture remaining eligible email, contacts, calendars, and tasks changes from the source system after the initial migration.
IT Partner performs final validation against the success criteria, reviews outstanding migration errors, applies reasonable fixes within the service scope, and confirms that users can send and receive mail and access migrated in-scope data in Microsoft 365. Remaining issues, exclusions, and final status are documented in the project closeout report.
Prerequisites
Who does what
IT Partner
- Gather information and verify the original G Suite
- Configure the destination Microsoft 365 tenant
- Create and configure users
- License assignment
- Create and configure a migration plan
- Provide informational messages for users
- Start and control the data migration process
Your team
- Coordinate Client resources and staff schedules
- Provide a dedicated point of contact responsible for working with IT Partner and coordinate any outside vendor resources and schedules as needed
- Review and approve engagement deliverables in a timely manner
- Configure all network equipment, such as load balancers, routers, firewalls, and switches
- Perform changes to internal and external DNS, as required
- Assist with identification of high-risk users (top executives and VIP users, users with 50 GB mailboxes or larger and/or 30 GB deleted folders or larger)
- Ensure IMAP Access is enabled for all users
- Ensure contact, calendar, and task services are turned on for all users
- End user support
What's not included
Limitations & technical notes
Frequently asked questions
What is included in the Full Cutover G Suite to Microsoft 365 Migration service?
IT Partner’s Full Cutover G Suite to Microsoft 365 Migration includes planning and performing a full cutover from G Suite to Microsoft 365, including mailboxes, calendars, contacts, tasks, and other in-scope mailbox information. Google Drive data is not included in this SKU; Drive migration is a separate SKU. The service also includes configuring the destination Microsoft 365 tenant, creating and configuring users, assigning licenses, controlling the migration process, providing user informational messages, and delivering a project closeout report.
How is this service different from an IMAP migration from G Suite to Microsoft 365?
This service is for a full cutover migration, because it includes Gmail mailbox data plus calendars, contacts, tasks, and other in-scope information migrated to Microsoft 365. If you only need mailbox migration, IT Partner states that you should order the IMAP migration from G Suite to Microsoft 365 instead.
How much does the Full Cutover G Suite to Microsoft 365 Migration cost?
The listed price for the Full Cutover G Suite to Microsoft 365 Migration is $300 plus $25 per mailbox. The final cost may depend on the number of mailboxes and any additional services requested outside the stated scope, so confirm the final budget with IT Partner before starting.
How long does a full cutover G Suite to Microsoft 365 migration take?
The stated duration for this service is 1 week. The plan may vary depending on customer needs, source environment readiness, data volume, and issue remediation, so the exact schedule should be confirmed during the kickoff and migration planning process.
What data is migrated from G Suite to Microsoft 365?
IT Partner migrates mailbox data from Gmail to Exchange Online, including mail, calendars, contacts, tasks, and other in-scope information. Google Drive data is not included in this SKU; Drive migration is a separate SKU.
Does this service migrate Google Drive files to SharePoint Online?
No. This SKU does not migrate Google Drive files to SharePoint Online or OneDrive for Business; Drive migration is a separate SKU. Corporate documents migration to SharePoint Online is explicitly not included, but it may be added as an additional service.
What Microsoft 365 prerequisites are required before migration?
You must have a Microsoft 365 tenant with Exchange Online licenses. The required Microsoft 365 licensing must be available for destination users.
What G Suite prerequisites are required before migration?
You must have admin access to G Suite, IMAP access must be enabled for all users, and contact, calendar, and task services must be turned on for all users.
What DNS access is needed for the cutover migration?
You must have access to your email domain DNS zone, because the cutover includes changing the MX record to point mail flow to the new Microsoft 365 tenant. The client is responsible for performing internal and external DNS changes as required.
What happens during the migration engagement?
The engagement typically includes a kickoff meeting, source system health check, user creation or AD Connect configuration, email and in-scope data migration start, migration verification, MX record cutover to Microsoft 365, final email and in-scope data migration, and issue verification and fixing if needed. The source materials provide milestone names only, so specific task-level details should be confirmed with IT Partner during planning.
Who is responsible for creating users and assigning licenses in Microsoft 365?
IT Partner is responsible for creating and configuring users and assigning licenses as part of the service. The client must ensure the required Microsoft 365 licensing is available, including Exchange Online licensing for destination users.
What responsibilities does IT Partner handle during the migration?
IT Partner gathers information, verifies the original G Suite environment, configures the destination Microsoft 365 tenant, creates and configures users, assigns licenses, creates the migration plan, sends informational messages for users, and starts and controls the data migration process.
What responsibilities does the client have during the migration?
The client must coordinate internal resources and schedules, provide a dedicated point of contact, review and approve deliverables, make required DNS changes, configure network equipment if needed, and provide end user support. The client must also identify high-risk users, such as executives, VIP users, users with 50 GB or larger mailboxes, or users with 30 GB or larger deleted folders.
Will users have access to email after the migration?
A success criterion for this service is that users can access Exchange Online on desktop PCs, mobile phones, and tablets from any place, any time. Another success criterion is that mail can be sent and received using Exchange Online after the cutover and required configuration are complete.
How is mail flow handled during the cutover to Microsoft 365?
The migration plan includes moving the MX record to the new Microsoft 365 tenant, which directs mail flow to Exchange Online. Because DNS changes are required and timing can affect mail routing, the client must have DNS access and should coordinate the cutover timing with IT Partner.
Is downtime expected during the G Suite to Microsoft 365 migration?
The service description does not specify a guaranteed downtime window. Because this is a full cutover migration involving DNS and mail-flow changes, any expected user impact or interruption should be confirmed with IT Partner during the migration plan and kickoff meeting.
Can users keep working in Google Drive during the migration?
Google Drive data is not included in this SKU, so Google Drive activity is outside the scope of this migration service. Drive migration is a separate SKU.
What limitations can affect Google Drive to OneDrive for Business migration?
Google Drive to OneDrive for Business migration is not included in this SKU. Drive migration is a separate SKU.
What is not included in the Full Cutover G Suite to Microsoft 365 Migration service?
Google Drive migration, customer team training, corporate documents migration to SharePoint Online, desktop software settings, and more extensive documentation are not included in the base service. Some excluded items, such as Drive migration, training, SharePoint Online corporate document migration, and more extensive documentation, may be available for an additional fee or as a separate SKU.
What deliverable is provided at the end of the migration?
IT Partner provides a project closeout report at the end of the engagement. The report indicates final project status, acceptance criteria matching, outstanding issues if any, and the final budget.