Difference betweew Patch, Build and Pilot.

Patch - If there is anything wrong with the application and user has complained about it, then we will release a patch which will be having a solution to that, lets us suppose you have an finance application and whenever you create an voucher system does some wrong calculation of 1 paisa and when you see your reports then there is a mismatch of DR and CR so you can send a patch running which it will correct the database entries and then release a new version of your product.

Build - It is a compete software /combination of module which are ready to be tested or ready to be delivered to client after testing.

Pilot - The primary purposes of a pilot are to demonstrate that your design works in the production environment as you expected and that it meets your organization’s business requirements. Conducting a pilot reduces your organization’s risk of encountering problems during full-scale deployment. To further minimize your risk during deployment, you might want to conduct multiple pilots consisting of separate pilots for different technologies or operating systems, or you might want to conduct a full-scale pilot in phases