This is the Stage Gates Diagram
 ![q3wegh.png](https://steemitimages.com/DQmW4wzoHwutqsTMeKuwkiFnSqBiu8t2vvUn5pEEZPW9KAi/q3wegh.png)

The Stage Gates are – 

Stages are –
1.	A first quick investigation
2.	Build a business case
3.	Development
4.	Test and validation
5.	Production and full launch.

Gates are – 
1.	Initial screen
2.	Interim approval
3.	Approval project
4.	Preview of development result
5.	Product release.

How to work Stage Gates –

![zdxfg.png](https://steemitimages.com/DQmVnBz53dYTsyu3Po7NGL2hFfbim3hx4HYjvBkh7MiZWQm/zdxfg.png)