Compatibility testing: Verify that the programme operates as intended across a range of platforms, web browsers, and endpoints as described in the project specifications.

Stress testing involves putting the software through a variety of challenging situations to see how well it can withstand heavy loads and unexpected events.

Check that the software gracefully manages failures, exceptions, and unforeseen circumstances by looking for clear error messages and making sure it doesn't crash or lose data.

Review of User Documentation: Check and validate user manuals, help files, and tutorials to make sure they are correct and beneficial to end users.

Feedback Gathering: Ask alpha testers for their opinions, any suggestions for enhancements, and any problems they run into while testing.

Identifying and reporting software flaws and problems, as well as working with developers to fix them, are all examples of bugs.

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https://medium.com/@theknowledgeacademy/alpha-testing-objectives-in-istqb-573f91cbc86d