1. Finding problems: Internal testing helps to find and solve bugs and problems in software and improve the stability and reliability of products.
2. Receive feedback: Internal testing can understand the performance and feedback of products, so that the development team can make adjustments and improvements.
3. Improve trust: Internal testing helps to enhance users' trust, because users believe that only internally tested software will eventually come out.
4. Improve the user experience: Internal testing helps to optimize the user experience, because internal testing can find problems that users may encounter during use and make improvements in advance.