Outbound message in Salesforce || What is Outbound Message is WorkFlow Rule

Outbound message in Salesforce || What is Outbound Message is WorkFlow Rule

What is the outbound message?
When to use?
Live Implementation
Outbound Message: -
Is a notification() SOAP API call
A single SOAP message can include unto 100 notifications
If the response from the other party is not ok then it will try to resend the notification for all those requests which are 24 hours old.

 What is Outbound Message is WorkFlow Rule