To split message flow processing between different locations, you must set up secure data routing.
If you are splitting processing between different integration servers, or between IBM Integration Bus and IBM Integration Bus on Cloud or IBM App Connect on IBM Cloud, your flows communicate by using a Switch server and connectivity agents. The Switch server is a special type of integration server that routes data. The connectivity agents contain the certificates that your flows require to communicate securely with the Switch server. The connectivity agents must be running in both the integration servers where you deploy your flows.
The steps that you need to take to prepare your environment differ depending on whether you are splitting processing between different integration servers, or between IBM Integration Bus and IBM Integration Bus on Cloud or IBM App Connect on IBM Cloud. For more information, see the following tasks.To prepare the environment for callable flows, complete one of the following tasks.