beta testers

A software release life cycle is the sum of the stages of development and maturity for a piece of computer software. Cycles range from its initial development to its eventual release, and include updated versions of the released version to help improve software or fix software bugs still present in the software.
Computer users are most likely to be familiar with the beta phase, as software products are sometimes publicly advertised as being beta in order to reduce users' expectations of their reliability.

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