Second letter of the Greek alphabet is named as Beta. In Software, Beta Phase is where Feature Development is complete but likely to contain known or unknown bugs. In software development Beta phase follows Alpha.
Beta Launch is a good practice where application is released and used by a small audience in order to identify bugs, remaining issues and workout any implementation before making it available to wider audience. Beta launch access end users experience in using the application, whether the data generated by the application satisfies the needs of the client and partners. Here there is an opportunity to test solution implementation with real time users while minimising the negative backlash that could make or break ta project.
Beta Launch is a cost effective way to test the product quality, test acceptance of product before commercial launch.