sample for camel to send data from grails to services ( service mix)

sample for camel to send data from grails to services ( service mix)

I don't understand what exactly Camel does. If you could give in 101 words
an introduction to Camel:
What exactly is it? How does it interact with an application written in
Java? Is it something that goes together with the server? Is it an
independent program?
Can you give me an sample.