Outbound messaging allows you to specify that changes to fields within Salesforce can cause messages with field values to be sent to designated external servers.
Outbound messaging is part of the workflow rule functionality in Salesforce. Workflow rules watch for specific kinds of field changes and trigger automatic Salesforce actions, such as sending email alerts, creating task records, or sending an outbound message.
For example, when an Opportunity is closed in Salesforce, you may need to immediately (in real time) create a corresponding Order in your backend ERP system.
Hi,
Outbound messaging allows you to specify that changes to fields within Salesforce can cause messages with field values to be sent to designated external servers.
Outbound messaging is part of the workflow rule functionality in Salesforce. Workflow rules watch for specific kinds of field changes and trigger automatic Salesforce actions, such as sending email alerts, creating task records, or sending an outbound message.
For example, when an Opportunity is closed in Salesforce, you may need to immediately (in real time) create a corresponding Order in your backend ERP system.
For better understanding you can follow this :
https://community.informatica.com/docs/DOC-2300