Microsoft 365 and Exchange. Move the environment—not just the inboxes.
Email and identity reach into almost every part of the business. Ask Buc plans migrations around your users, applications, domains, access requirements and the services that must keep working after cutover.
Discuss Your Microsoft 365 Migration · Call (219) 256-5454
The right starting point is discovery.
Review the source environment, tenant, domains, mailboxes, shared resources, licensing, identity model and mail flow. Identify the applications, devices and third parties that depend on email before choosing a migration path.
A copier relay, service account, shared mailbox or line-of-business application can be a critical dependency even when it does not appear in the mailbox count.
Migration and identity engineering
Work can include Exchange-to-Microsoft 365 migration planning, hybrid dependencies, Active Directory and Microsoft Entra integration, synchronization review, authentication, mail routing and tenant configuration.
Teams, SharePoint, OneDrive, shared resources and data permissions are separate workstreams included when stated in the scope. Product licensing and vendor charges are identified in the proposal.
What we validate before the move
Source-system health. Identity and domain readiness. Mail-flow dependencies. Mailbox and permission requirements. Retention and application constraints. Backup and recovery considerations. Administrative access. Pilot users and rollback decisions.
The findings drive the migration sequence. An unhealthy source environment may need remediation before production mailboxes move.
Pilot, migrate, stabilize.
Start with representative pilot scenarios. Verify mail delivery, sign-in, client behavior, shared access and application dependencies. Expand the migration in agreed stages, communicate user changes and validate the final cutover.
The handoff identifies administrative responsibilities, ongoing support, unresolved exceptions and any retained infrastructure. Do not retire a server merely because mailbox movement has completed.
Deliverables
An inventory and dependency review; migration approach and schedule; identity and mail-flow plan; pilot criteria; cutover checklist; validation results; and an operating handoff. The agreement distinguishes implementation from ongoing Microsoft 365 administration.
What determines cost?
Mailbox and data volume, source versions, hybrid complexity, domains, identity condition, applications, retention requirements, maintenance windows and user-support needs. A scope conversation identifies whether a focused migration or broader readiness assessment is appropriate.
Questions before committing
Can you work alongside our current provider? Yes. Responsibility, access and communication are defined before changes begin.
Does this include ongoing support? Migration and recurring administration are separate unless included together in the agreement.
Do we need to prepare sensitive exports for the first call? No. Start with a high-level environment summary. Sensitive materials move through an approved secure process after scope and access are established.