In the wave of digital transformation, IoT (Internet of Things) technology is emerging as the link that connects the world, seamlessly integrating various smart devices into a cohesive whole. Against this backdrop, Nearlink is making its mark as a key hub for connecting the future. This article will introduce the three-tier architecture of the Nearlink system, including the foundational application layer, foundational service layer, and Nearlink access layer. Additionally, it will cover two communication interfaces within the Nearlinkaccess layer: SLB (Basic Access) and SLE (Low Power Access). The three-tier architecture overview of Nearlink: Basic Application Layer:Implements multifunctional applications for various scenarios, serving sectors such as automotive, home, audio-visual, and more. Provides rich functionalities, enabling widespread applications o...