With the continuous evolution of the internet, internet open platforms have been constantly changing, resulting in diversified user groups and application scenarios, which in turn have led to various service models. To promote the development of internet open platforms, it is necessary to explore these new scenarios and service models. This paper aims to discuss the technical architecture, service models, and operation of internet open platforms. Initially, we review the development history of internet open platforms and introduce some typical internet open platforms. Additionally, we analyze the technical architecture of internet open platform, and introduce four different product forms and compare their advantages and applicable scenarios. Furthermore, we summarize five service models of internet open platforms, including the strategies adopted by enterprises at different stages. Finally, we analyze the developers of open platforms and provide suggestions for internet platform operation. We found that both enterprises and developers can fulfill their demands and achieve win-win cooperation through internet open platforms. Furthermore, the service model of open platforms will change with the development of enterprise products. Thus, companies should choose suitable service models based on their goals and market positioning. This study serves as a reference and guidance for the construction and operation of internet open platforms.