Google Cloud will retire its CBRS spectrum access system on June 10, 2027, cutting off new sign-ups on June 10, 2026. Existing customers can use the service through the transition year, but they’ll need to move to another SAS vendor. Google’s retirement notice points to Federated Wireless, Red Technologies, Nokia, Sony and Keybridge as alternatives and links to detailed migration steps. CBRS (3.5 GHz) runs on a three-tier model: tier 1 protects Navy ship radars and fixed-satellite stations, tier 2 issues priority access licenses to enterprises and service providers, and tier 3 offers general authorized access. The FCC set aside 150 MHz in 2015 and approved the framework in early 2020. Initial SAS admins included CommScope, Federated Wireless, Google and Sony, all tasked with dynamically allocating spectrum to prevent harmful interference. Industry data on CBRS is mixed. A CTIA-commissioned Recon Analytics report (late 2022) slammed CBRS for low utilization and poor demand, arguing the program wasted mid-band spectrum. Critics cite only a handful of large deployments and few innovative use cases. Proponents—Amazon, HPE, Charter, Comcast, Federated Wireless and others—pushed back in a letter to the FCC, pointing to more than 285,000 CBRS base stations and client devices deployed so far, including 10,000 by cellular operators. Federated Wireless claims it manages 45% of the roughly 400,000 CBRS devices in service. Spectrum sharing is also playing out in the 6 GHz band. In 2020, the FCC opened 1,200 MHz for unlicensed Wi-Fi use under new coordination rules. Frequency coordination platforms now let Wi-Fi 6E and 7 gear tap deeper into 6 GHz while steering signals farther. That combo of extra bandwidth and range aims to boost outdoor Wi-Fi capacity and coverage.