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Exchange consolidation and migration
Exchange consolidation is the process of combining multiple Exchange environments into a single, integrated, and more manageable solution. The exact approach can vary, depending on an organization’s needs and structure.
The consolidation is aimed at simplifying email management, increasing efficiency and security, and reducing costs associated with the postal infrastructure:
- Hybrid - Establish a relationship between different Exchange environments (e.g., on-premise and cloud) to allow sharing of resources. Hybrid relationships are most commonly used in situations where an organization wants to migrate from Exchange on-premise to the cloud gradually, without interrupting daily operations.
- Mailbox and resource migration - Move users, mailboxes, calendars and resources to the target Exchange environment.
- Standardization - Standardize security policies, settings and management standards across different Exchange environments. Standardization can include rules for archiving, mailbox sizing, distribution group management and data retention policies.
- Upgrade - Upgrade older versions of Exchange to newer, vendor-supported versions. In some cases, this may mean migrating from Exchange on-premise to Exchange Online (part of Microsoft 365).
What does the process look like?
Preliminary analysis
During this step, you analyze existing Exchange environments, their configuration and software versions, as well as the number of mailboxes and resources to be migrated. A “mother file” is then created to list all objects that will be migrated. Business and technical goals related to the consolidation, migration are also defined.
Planning and design
At this stage, a detailed consolidation, migration plan is developed, taking into account the needs of the organization. Choosing the right approach - migrating mailboxes, combining on-premise and cloud environments, or reorganizing the Exchange structure - is crucial to the success of the project.
Preparation of the environment
This stage includes activities to prepare the Exchange infrastructure for the consolidation or migration process:
- Upgrading systems: making sure all Exchange servers are upgraded to compatible and required versions.
- Replication and synchronization: Ensure proper synchronization of mailboxes, accounts, and data replication between environments before migration begins.
- Tool preparation: Installing and configuring migration tools and other tools required for moving data and testing the environment.
- Securing the environment: Conduct a security review of the environment to detect configuration errors. Possible compliance fixes.
- Backup: Perform a full backup of all key Active Directory servers and data to enable easy recovery if any issues arise.
Post-implementation testing and evaluation
After the migration, tests are conducted to check the operation of the new environment. These tests include the functioning of mailboxes, their contents, access to calendars and policy compliance. Technical documentation with instructions for administrators is also created and provided to the client.
Benefits of consolidation with ISCG
Comprehensive support
Within ISCG, our clients can count on support in four key areas - digital applications and processes, cyber security, IT infrastructure and cloud solutions. By combining these competencies under one roof, we can identify potential issues and risks at various levels.
Improving security
Guarantee of service quality
Frequently Asked Questions
Migration can include older versions of Exchange (e.g. Exchange 2010, 2013, 2016) as well as newer versions. It is also possible to migrate from other email systems (e.g. Lotus Notes, Google Workspace) to Exchange Online. Migration tools support a wide range of versions, enabling a smooth transition between different platforms.

Perform Exchange consolidation and migration with ISCG
- Support and development of Microsoft and Nintex based applications
- Application design and development including digital processes
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- Contract management
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