Group 1 - The core difference between product mini-programs and custom-developed mini-programs is that product mini-programs are ready-made and can be used immediately after purchase, while custom development involves creating a program tailored to specific client needs [3][5]. - Custom development requires a clear understanding of client requirements, including desired functionalities and user roles, which leads to the creation of a functional document and product prototype before actual development begins [6][8]. - It is essential to communicate functionalities clearly at the beginning of the custom development process to avoid complications later, especially when dealing with different product specifications [8][10]. Group 2 - In the project development phase, the UI design is based on the product prototype, followed by front-end development and back-end functionality development according to the product documentation [13]. - During the testing phase, it is common for changes to arise, as clients may realize additional needs that were not initially communicated [15]. - After successful testing, the code is submitted for review on the mini-program management platform, and if rejected, the reasons must be addressed before resubmission [17].