Today, let's talk about the different scenarios of online training, learning, and examination systems. Over the years, we've developed more than twenty sets of such systems, yet no two clients have had exactly the same requirements. For example, we had a school - type client. Their system placed great emphasis on online training and learning, serving as an auxiliary teaching tool for the school. During the learning process, some knowledge points could be evaluated in real - time to check if students understood them. The post - learning exams were tools for students' self - evaluation, not used as real - test data for students. There is also the training and examination system for private enterprises, which is designed for profit - making. Therefore, they require students to purchase courses according to different training programs first. Only after the purchase can students start online learning, training, and download relevant materials. So, this type of system pays more attention to functions such as payment, finance, statistics, and member permissions, and these aspects need to be elaborately designed. Some clients are engaged in highly professional training, like children's teaching training or nurse's nursing training. They not only need to learn from videos and be tested on theoretical knowledge but also need to conduct specific practical simulations within the system. For instance, for a nurse to take care of a patient, what kind of medicines and medical devices are needed and how to use them step - by - step? Teaching courseware like this requires us to develop it custom - made, and after development, it needs to be integrated with the system. As you can see, although they are all called online learning, training, and examination systems, due to different industries, companies, and positioning, the requirements can vary significantly. At this point, some smart people might say, "Well, I can just buy a super - comprehensive system with all functions, and there's no need for customization." Firstly, the more functions a software has, the higher its price will be. Secondly, a bloated system will inevitably lead to an increase in maintenance costs. Thirdly, a bloated code poses a huge challenge to the system's security protection. For example, a few years ago, everyone wanted to find BBS code and integrate it into their websites to encourage discussion and increase user interaction. But why are there so few websites using BBS now? It's because they all used common BBS systems in the early days. These systems seemed to have powerful functions, but in fact, they had a plethora of loopholes. Right after implementation, it might have felt great, but when it came to maintenance, there were small repairs every three days and major overhauls every five days. No matter how much they were modified, hackers could still come and go as they pleased, do whatever they wanted, such as posting maliciously, deleting your data, and spamming in batches. This left the management in a complete mess. Based on my experience, I still recommend that you use a system that suits you, a system customized according to the unique needs of your enterprise. This is the most sustainable and reliable approach. Alright, we are Yiyun Technology. Follow us. You need a reliable team.