Email & Identity
Exchange → M365 with secure, verified identities.
- ✓Cutover, staged, or hybrid migration
- ✓Entra ID (Azure AD) sync & SSO
- ✓MFA & conditional access
Migrate with Confidence. Thrive in the Cloud.
Moving to Microsoft 365 is one of the most impactful technology decisions a business can make. But without expert planning, migrations can disrupt daily operations and cause frustration.
ATCOM has guided countless organizations through successful Microsoft 365 migrations. We handle every step— from assessing your current environment to securely moving email, files, and applications into the cloud. Our proven process ensures minimal downtime and a smooth transition for your team.
Once you're in Microsoft 365, the possibilities expand. Collaboration through Teams, anywhere access to files via OneDrive, enterprise‑grade email security, and continuous updates from Microsoft all empower your workforce to be more productive.
But migration is only the beginning. ATCOM provides ongoing management, security, and optimization of your Microsoft 365 environment. That means you'll always get the most from your investment—without having to keep up with every new feature or licensing change yourself.
Whether you're upgrading from an on‑premises Exchange server, consolidating multiple platforms, or simply looking to modernize your workflow, ATCOM makes Microsoft 365 migrations simple, secure, and successful.
What We Move & Secure
Files & Collaboration
File servers → OneDrive/SharePoint; chat & meetings in Teams.
- ✓Share & permission mapping
- ✓Teams creation & governance
- ✓Retention & DLP policies
Security & Compliance
Protect data and meet requirements with built‑in controls.
- ✓Email security & anti‑phishing
- ✓Information protection & labels
- ✓Audit, eDiscovery & retention
Our Proven Migration Process
1) Assess
Inventory mailboxes, file shares, identities, domains, and dependencies.
2) Plan
Choose cutover, staged, or hybrid; design coexistence & change management.
3) Prepare
Tenant readiness, security baselines, pilot groups, and user comms.
4) Migrate
Move mail, files, and services with minimal downtime and validation.
5) Stabilize & Optimize
Post‑cutover tuning, governance, training, and ongoing managed care.
Migration Approaches at a Glance
Cutover Fastest
All users move at once—great for small to mid‑sized orgs.
- ✓Quick timeline
- ✓Simple coordination
- ✓Ideal for fewer dependencies
Staged Lower Risk
Move in waves—keeps complexity low while avoiding big‑bang change.
- ✓Phased user groups
- ✓Pilot then expand
- ✓Flexible scheduling
Hybrid Coexistence
On‑prem + cloud live together—best for larger or complex environments.
- ✓Minimal disruption
- ✓Longer timeline, more control
- ✓Supports complex dependencies
Modern collaboration without the chaos. We’ll get you into Microsoft 365 the right way.
Get a Migration Plan
Frequently Asked Questions
How much downtime should we expect?
With proper planning, mailbox and file cutovers are typically scheduled after hours with little to no workday downtime for users.
Can you consolidate multiple tenants or platforms?
Yes—we routinely merge tenants and migrate from platforms like Google Workspace or legacy file servers to M365.
Who trains our users?
We provide quick‑start guides, live training options, and post‑cutover support so adoption is smooth.
Do you manage M365 after the migration?
Absolutely. Our managed services include security baselines, updates, licensing optimization, and help desk support.
Ready to move to Microsoft 365?
We’ll scope the right approach and handle the details so your team stays productive.