CMS Tracker Status, Challenges, and Performance in Run 3

The CMS silicon tracker, consisting of the pixel and strip detectors, provides precise measurements of charged-particle trajectories in the high-luminosity environment of the CERN Large Hadron Collider (LHC). During Run~3 at $\sqrt{s}=13.6$ TeV, the tracker has operated stably under increasingly demanding conditions, with the average pile-up exceeding 60~interactions per bunch crossing and a total integrated luminosity more than 245 fb$^{-1}$. The detector maintains a high fraction of active channels, exceeding 94% across all subsystems, and delivers excellent hit efficiency, signal-to-noise ratio, and spatial resolution. Radiation effects are mitigated through increases in bias voltage. Effects such as cluster breaking in the pixel detector are addressed through updated calibrations and improved reconstruction. Overall, the CMS tracker continues to provide excellent tracking performance, ensuring reliable physics reconstruction throughout Run 3 and offering valuable operational experience for the High-Luminosity LHC detector upgrades.