These four This section will help you ensure the successful migration of integrations.
As with all changes, the work on integrations begins with a current status assessment. First, you need to determine what integrations are in the environment, what they do, and what they are connected to. Integrations may have often been built around different systems, vendors, and solutions over the years, which can leave you with a fragmented picture.
The migration project is a good time to gather your understanding and assess how clear and coherent the whole is. Once the current state has been reviewed, the same information must also be included in the documentation. Up-to-date documentation should clearly state: what the purpose of the integration is, who will use the information, whether the information is transferred in real time or on a scheduled basis, and what protocols and technologies the connection uses. In a phased migration, it is also necessary to ensure that the support organization has up-to-date information about whether the integration has already been migrated. It is also necessary to ensure that the contact information of third parties is up-to-date
At the same time, you also need to identify dependencies that will affect the progress of the migration. These can include expiring certificates, access control issues, external party agreements, and various approvals. These factors have a major impact on how smoothly the migration can be implemented. When the big picture is clear, the migration is also much easier to plan and manage.
Many integration challenges arise when you start migrating connections to a new environment. That's why it's a good idea to include network connections and firewall changes in your planning from the start.
When the integration target address changes, this requires changes in several places. The time of change and the actions to be taken in the event of a disruption must also be agreed with external parties. A smooth rollover requires that the right people are involved at the right time, both in your own organization and on the partners' side.
For example, name service changes must also be allowed sufficient time to take effect before the service is launched in the new environment. After the change, the documentation and firewall rules must be cleaned up carefully. It is not a good idea to leave old openings or unnecessary rules in the firewalls, as they weaken manageability and can create unnecessary risks later.
You should also pay attention to scheduled data transfers and batch runs, as they are often the first to show the differences in the new environment. It is worth testing them before the actual rollout.
When an entity moves from the data center to the cloud, response times and performance can change. Therefore, they need to be analyzed in advance. Testing ensures that, for example, nighttime runs will work as designed in the new environment.
Support services also need to know what is being migrated, when it is being migrated, at what stage there may be outages, and who is responsible for any troubleshooting. This makes the migration easier and at the same time gives the project team better conditions to manage and support the whole thing.
A phased migration may also include temporary solutions to manage connections and routing during the transition. Their purpose should be clearly described in advance, and it should be agreed when they will be dismantled.
Once the migration is complete, the integrations should be handed over to the maintenance organization in a controlled manner. It is a good idea to designate an owner and contact person for each integration and ensure that the necessary descriptions and information are in the right place.
When responsibilities are clear and the whole is easy to monitor, maintain and develop, integrations become a natural part of everyday life. At the same time, they also form a better foundation for future changes.
When you're responsible for a critical transformation project, you can't afford to make the wrong choice. Large-scale infrastructure migrations require experience, careful preparation, and determined leadership.
At Graniit, integration planning, migration, and implementation are familiar entities. We help our clients carry out critical change projects in a controlled manner and in support of business goals.
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