DIGITIMES Research believes that although Microsoft's Internet of Things (IoT) platform has a technological lead and is in a position to move from closed to open source in response to the trend of IoT, compared with competitors such as Amazon and Google in vertical applications Clearly laid out, Microsoft's attitude in vertical applications is unknown, for fear of its future IoT era of development under the hidden worries.According to IoT Analytics statistics, today the world's IoT platform more than 450, on the surface looks quite a number of DIGITIMES Research Observed that the growth rate of the number of platforms is gradually reduced.Micro platform vendors such as Microsoft, Amazon, etc., through mergers and acquisitions and strategic alliances rapid development, which in turn Microsoft's market share in the fastest growing.DIGITIMES Research that the platform in the IoT value chain Accounting for the proportion of the value will gradually reduce the proportion of software services for vertical areas gradually increased.Observation of the current platform for the development of large manufacturers, in addition to strengthening the stability and efficiency of cross-layer technology platform itself, but also actively to the software services to extend the value of the layout Chain.This article will be the Microsoft platform as a starting point, in-depth analysis of its platform in the technical layout, and comparison Progress analysis of Amazon, Microsoft, Google on IoT technologies and applications.