Livestream testing refers to the process of checking and ensuring the quality, functionality, and reliability of a livestream before it goes live. It involves conducting tests and rehearsals to detect and resolve any technical issues, optimize video and audio settings, and ensure the smooth transmission of the livestream. Livestream testing can include verifying the streaming equipment, internet connection, audio levels, video resolution, and compatibility with different devices and platforms. It is crucial to perform livestream testing to minimize interruptions and provide the best possible viewing experience for the audience.