Introduction to POC(Proof Of Concept)

The word "POC" stands for Proof of concept(We can say as,"Prove of work" for better understanding.Note that,this is not actual meaning.I have wrote for better understanding for reader.)
Most often you should see this word on a hackers post(specially those who are in hacking team's groups)
a hacker shares what exploit he used to hack the site with poc.
we can see this example to understand more :

Hacked by ******
Site : http://127.0.0.1:8080/
POC : com_jce

Here com_jce is the exploit used by hacker to get into the site 127.0.0.1
Thats it all about POC.hope you have got my point.