What is software testing? What is alpha and beta testing? What is smoke and sanity testing? What is performance testing? What is UI testing? What is

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Software testing is the process of evaluating a software application to ensure it meets specified requirements and functions correctly.

Alpha testing is performed by internal teams before the software is released to external users.
Beta testing is performed by a select group of external users before the software is released to the public.
Smoke testing is a preliminary test to check if the basic functionalities of the software are working.
Sanity testing is a subset of regression testing to quickly determine if the new functionality is working as expected.
Performance testing evaluates the speed, responsiveness, and stability of a software application under various conditions.
UI testing focuses on the user interface of the software to ensure it is user-friendly and visually appealing.