McDonald's has more than 4,000 restaurants in mainland China and serves more than 1 billion customers every year. In the process of rapid development of its online and offline business, it faces the problems of huge pressure on its original CRM system, scattered membership data in various channels, and single form of rules for marketing activities, etc. Techsun provides a solution for it, based on cloud-native architecture, which is sufficient to cope with the impact of daily 10 million high concurrency; it supports the development of diverse tagging schemes, high fineness segmentation of the population, and marketing automation combined with member preferences. Reaching.