When the acquisition closes,the migration begins.Summit: Been there. Done that.
Enterprise Microsoft 365 migrations for organizations under pressure — M&A integrations, file server retirements, cloud consolidations — on time, on budget, without disruption.
The methodology Fortune 100 companies trust for their most critical migrations.
Summit was founded by Jim Galfano, a former Microsoft FastTrack engineer — the elite program Microsoft deploys to guide enterprise migrations at global scale. Jim brings that methodology, and 25+ years of enterprise Microsoft experience, directly to your engagement.
Reduced Risk
Hardened runbooks for identity, permissions, and content — validated on large, regulated environments including nuclear utilities and financial services.
Predictable Timelines
Wave plans with clear readiness gates and disciplined cutovers that hold to enterprise schedules — every engagement, every time.
Zero Disruption
Business-safe execution with executive visibility and a clean, stable handoff. Your users arrive to an organized, ready-day-one environment.
Six ways Summit delivers.
Tenant-to-Tenant
M&A · Highest ComplexityM&A-driven tenant mergers with coexistence, directory integrity, and governance preserved. Summit's highest-value specialization — the migration type most generalist firms avoid.
M365 Tenant Setup
Foundation · Security BaselineBuild a secure, well-architected Microsoft 365 tenant foundation ready for growth, governance, and future migrations — done right from day one.
Cloud → M365
Box · Dropbox · Google · EgnyteMove from Box, Dropbox, Google Workspace, or Egnyte to SharePoint and OneDrive with metadata, permissions, and structure fully intact.
File Shares → M365
On-Premises · NAS · InfrastructureLift-and-improve from on-premises file servers with structured information architecture, permissions hygiene, and full owner alignment before migration begins.
Email Migrations
Google · Exchange · HostedMove from Google Workspace, hosted Exchange, or on-premises Exchange to Exchange Online — cleanly and without mail flow disruption at any scale.
Migration Rescue
Recovery · StabilizationStalled migration? Blown timeline? Summit stabilizes troubled engagements, identifies root cause, and finishes the job with confidence.
Enterprise scale. Real results.
Global file server retirement across 20+ countries — including offline facilities with no internet access.
Ongoing M&A migration and M365 governance partner for one of the nation's largest independent wealth management firms.
45,000 users and 120 TB migrated inside a nuclear-regulated Fortune 100 environment with zero incidents.