BADI Definition in SAP

Business Add-Ins (BADI):

     Business Add-Ins is a new SAP enhancement technique based on ABAP objects. They can be inserted into the SAP system based on specific user requirement.

BADIs are implemented through ABAP objects, classes, interfaces and all that of object oriented stuff. Main advantage of BADI over EXITs is due to its multiple Implementation concept. Nothing but multiple implementations are possible for a single BADI. And we can activate and deactivate our implementations without effecting other implementations.

Click here for tutorial to Implement BADI with Example