Trial stages are an important part of the development process for any product or service. The two main trial stages are tests and betas. Tests involve a small group of people who are given the product or service to use and provide feedback on its performance. Betas involve a larger group of people who are given the product or service to use and provide feedback on its performance. Both tests and betas are used to identify any issues with the product or service before it is released to the public.