Tenant migrations have unique circumstances which require precise planning.
We help organizations migrate Google Workspace data to other platforms.
May 23rd, 2026
Most organizations don’t realize they’ve made the wrong migration decision until it’s too late. At the start, everything looks logical. The plan is approved,…
Coherence Inc. is the market leader in IT consulting services, specializing in on-premise and tenant migrations including Microsoft 365, Azure, Active Directory, Exchange, IBM Lotus Notes, Novell GroupWise, and NDS migrations.
Coherence has been doing migrations since 2002 and strives to minimize the impact of migration through leading tools and in-house applications.
Clients from around the world have trusted Coherence to lead their tenant to tenant migrations including Active Directory, EntraID and Exchange.
We engage directly with small, medium, and large enterprises, providing customized solutions in a range of industry sectors.
We offer a wide range of solutions surrounding the directory, data, and messaging migration arena.
We pride ourselves on the quality of our team, the quality of their delivery, the quality of the tools we leverage, and the quality of our company as a whole.
As part of our consulting services, we compliment by offering project management scalable to your needs.
We offer custom developed tools and product add-ons proven to automate and assist in migrations. Whatever your migration needs, you are in quality hands with Coherence.
Coherence, Inc. offers a wide range of solutions surrounding the directory, data, and messaging migration arena using best-of-breed consultants to align our solutions with our customers’ needs.
We will migrate your e-mail from where it is to where you want it whether it is Gmail, M365, Groupwise, Exchange, Notes, POP3, SMTP, etc.
We have significant experience migrating not only Microsoft Active Directory, but more importantly thousands of applications that rely on it.
By providing tool and process education, turning certification into readiness, we help partners scale their M&A migration practices.
Migrations are often complicated. Uninformed decisions can have a significant impact on your business so it's important that you engage the right company to help you with your migration.
The benefits of any migration are realized by meeting the business objectives and will differ from project to project. Most organizations complete migrations to reduce budget and reduce information security risk.
Read our blog posts and get into the latest migration input immediately.
Check out frequently asked questions for Coherence
Coherence Inc. is a specialist IT migration and consulting firm based in Tega Cay, South Carolina, serving organizations worldwide since 2002. The company specializes in complex enterprise migrations including Microsoft 365 tenant-to-tenant migrations, Active Directory and Microsoft Entra ID migrations, email platform migrations (Office 365, Exchange, Google Workspace, IMAP), and partner enablement services for M&A scenarios. Coherence combines decades of hands-on expertise using native, vendor and custom-built proprietary tools to minimize disruption and deliver reliable results at any scale
A Microsoft 365 tenant-to-tenant (T2T) migration is the process of moving users, data, applications, and configurations from one Microsoft 365 tenant to another. Organizations typically need this when undergoing mergers, acquisitions, divestitures, or corporate restructuring that requires IT environments to be consolidated or separated. Other common triggers include compliance requirements, geographic expansion, or moving to a new cloud provider. Coherence Inc. has managed T2T migrations for some of the world’s largest organizations, including Microsoft, Google, WarnerMedia, American Express, Chevron, the U.S. Air Force, and many more.
Coherence Inc. has been performing IT migrations since 2002, giving the company over two decades of specialized experience. Each consultant on the Coherence team has logged more than 10,000 hours in migrations, making them true subject-matter experts. This depth of experience across hundreds of enterprise engagements – spanning financial services, media, government, energy, and telecommunications sectors – is what sets Coherence apart from generalist IT consultancies.
Coherence supports a comprehensive range of email migration scenarios. The team can migrate from and to virtually any platform, including Microsoft Exchange (on-premise and online), Microsoft 365, IBM Lotus Notes, Novell GroupWise, Google Workspace (G Suite), POP3, and SMTP-based systems. Whether you are moving to the cloud for the first time, switching providers, or consolidating mailboxes after a merger, Coherence’s consultants design a migration strategy tailored to your environment, data volume, and business continuity requirements
Active Directory (AD) migration, and now Microsoft Entra ID migration, is the process of moving an organization’s user accounts, computers, groups, and policies from one AD environment to another. It is one of the most complex IT migrations because Active Directory underpins virtually every critical application in an organization, including authentication, access control, email, and security tools. A poorly executed AD migration can cause application outages, security gaps, and identity access failures. Coherence uses proven automation and custom tooling to migrate users and applications with minimal impact, including SID history migration and dependency mapping for application compatibility
Yes. Coherence develops and maintains its own custom migration tools and product add-ons specifically designed to reduce the duration and impact of complex migrations. These tools automate repetitive migration tasks, handle edge cases that standard vendor tools cannot address, and integrate with leading third-party platforms such as Quest’s On Demand Migration — Coherence’s preferred enterprise toolset. This combination of in-house development and best-of-breed vendor tools gives clients a more efficient, lower-risk migration experience.
Coherence follows a structured, phased migration methodology. The process begins with a Discovery and Architecture phase, where the team collects detailed data on users, computers, groups, mail data, and application dependencies. This is followed by a Proof of Concept for testing and validating the approach. The team then moves into Implementation, guiding clients through multiple migration waves before the final cutover. Throughout every phase, Coherence provides Knowledge Transfer so the client’s internal team is fully equipped to manage the environment post-migration. Project Management is offered at every stage to keep timelines, budgets, and communications on track.
Coherence has successfully completed migrations for a wide range of enterprise clients across multiple industries. Notable clients include Microsoft, Google, WarnerMedia, American Express, CBC Television, Bell Canada, Chevron, the U.S. Air Force, and many more. This client roster spans financial services, media and entertainment, energy, telecommunications, government, and technology sectors – demonstrating Coherence’s ability to manage mission-critical migrations at the highest levels of security and complexity.
Yes – mergers, acquisitions, and divestitures are among Coherence’s core specializations. These events create urgent and complex IT integration or separation requirements, often involving simultaneous migrations of Active Directory, Microsoft 365 tenants, email platforms, and business-critical applications. Coherence can assist with “Day One” rebranding of emails, even before the email migration is complete. Coherence also offers Partner Enablement Services specifically designed to help system integrators and consulting partners build their own M&A migration practices, providing tool education, process frameworks, and certification readiness support.
The best first step is to contact Coherence directly to discuss your migration needs. You can reach the team by phone at (803) 788-7144, by email at sales@coherence.us, or through the contact form at coherence.us/contact-us. Coherence offers initial discovery sessions and proof-of-concept validation to assess your environment, define the migration strategy, and provide a clear project roadmap before any commitment is made. Whether your migration is months away or already urgent, the team will work with you to establish a plan that minimizes risk and business disruption.