We provide a range of intelligent technology solutions designed to meet the challenges of public and private sector organizations.

Our principal solutions areas are underpinned by an extensive portfolio of professional services offered via a range of delivery models.

We engage directly with small, medium and large enterprises, providing customized solutions in a range of industry sectors.

Welcome to Coherence, Inc

Coherence, Inc. is a small business focusing on IT consulting services with a specialty in migrations.  Specifically Coherence works with Active Directory, Exchange, Notes, GroupWise and NDS migrations.  Coherence has and continues to perform a significant amount of custom development to automate the migration process to make it fast and simple as possible.  Our services are focused on providing expertise around the migration process.

Complications of Migrations

Migrations are often overcomplicated by uninformed decisions made by business and technical staff.  These decisions - be they technical, time line, budgetary, or inappropriate process chaining - can cause undue stress on a project and, at its worst, cause a project to halt in its tracks.


What are the benefits achieved?

The benefits of any migration are realized by meeting the business objectives and will differ from project to project.  By that we mean merger, acquisition, and/or divesture projects all have completely different goal sets where different benefits are realized by the business and end users.


Latest Blogs

MS Exchange Client-Server protocols

October 28, 2016

Just came across this simple diagram of MS Exchange client-server protocols and figured I’d share it here. These days there is a bit of a confusion on where each protocol used in Exchange so I decided to try and fill this gap. I will also put it in the context of QMM migrations and describe  how it evolved over the years plus point out a difference in permissions assignment model.

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Hyper-V “Connect to VM” graphics issue

October 26, 2016

You may say that it’s not a migration related issue but I will disagree with you here because once you start having issues with your migration LAB, all your migration plans start falling apart… and here I am with my new blog. So imagine one day you start your VMs running on Windows 10 Hyper-V machine (Dell XPS15 laptop), right-click in Hyper-V Manager | Connect and instead of a friendly OS window it shows a half of a black screen, failing to initialize proper VM image. VM itself however runs fine under the covers and can be connected to via RDP, but in many cases where networking configuration is not cooperating or machine is not booting up, RDP access is not going to be much of a help here.

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