(As applications in various industries become more and more complex, mainstream development frameworks have shifted from traditional monolithic application architectures to microservice architectures. Technology is changing with each passing day. Developers and testers must establish the awareness of testing strategy analysis and building a quality assurance system as soon as possible, and understand the quality assurance system in their own business from a global perspective. Start with the end in mind, consciously and systematically complete various means and skills in the quality assurance system to experience different career growth paths. There are 20 lectures in this column, which are divided into four modules. Starting from the characteristics of the microservice architecture, we will analyze for you the challenges and countermeasures that the server and test sides will face under the microservice architecture.)