Differentiate between Alpha Testing and Beta Testing?

Aplha Testing and Beta Testing are performed as part of User Acceptance Testing(UAT).

The difference between Alpha Testing and Beta Testing  is given in below table:

Alpha Testing	Beta Testing
1. This testing is performed at developer site.	1. This testing is performed at Customer site.
2. It is performed by developers and testers.	2. It is performed by customer.
3. It is virtual environment.	3. It is real time environment.
4. It is performed before beta testing.	4. It is performed after alpha testing.
5. Both black box and white box testing are performed.	5. Only black box testing is performed.
6. Long execution cycles are required.	6. Few weeks of execution.
7. Critical issues can be fixed immediately.	7. Feedback is collected and implemented in future versions.
8. It does not have any other special name.	8. It is also called as Field testing.