What Salesforce technology is best for sending customer information to an external SOAP API promptly after a phone conversation?

The best choice for sending customer information to an external SOAP API promptly after a phone conversation is to write an outbound message to send customer information to the external database. This approach is particularly effective because outbound messages are part of Salesforce’s workflow rules and provide a simple and reliable mechanism for sending data to external systems in real time.

Using an outbound message ensures that the data is sent immediately after the defined criteria are met—in this case, right after the phone conversation concludes. It leverages SOAP protocol, making it suitable for systems that require this type of communication. Outbound messages are also asynchronous, which means that they do not block the execution of the Salesforce transaction and allow for a smooth user experience.

The other options may not align with the immediate need for data transmission. A nightly batch synchronization would involve delays, as it is suited for less urgent tasks that can be processed overnight. Writing a trigger with an @future method could also accomplish the task but involves more complexity and does not utilize the built-in capabilities of Salesforce like outbound messages. While sending customer information to an ESB might integrate various integration patterns, it does not directly target the requirement of sending information to an external SOAP API in an immediate and effective manner.

Therefore, using an outbound message specifically