Wi-Fi 7, known as IEEE 802.11be or Extremely High Throughput (EHT), has built upon the capabilities of Wi-Fi 6, representing a significant leap forward in wireless networking technology. It triples the maximum throughput of its predecessor, which facilitates rapid data transmission and seamless streaming of ultra-high-definition content, among other capabilities. With enhancements such as multi-link operation, 4 K-QAM modulation, and channel bandwidth extending up to 320 MHz, Wi-Fi 7 dramatically enhances network capacity, adeptly handling a high density of devices in homes, offices, and public areas. This chapter aims to familiarize readers with the core tenets of Wi-Fi 7 technology, encompassing key technological advancements and fundamental principles, the evolution of the Physical Layer and Medium Access Control Layers in Wi-Fi 7, as well as updates to security protocols and wireless mesh networking.