Microsoft’s tetron qubit—built from hybrid superconductor–semiconductor nanowires hosting pairs of Majorana zero modes–marks a key advance in topological quantum computing.This talk presents the latest experimental results, including the first demonstration of two distinct fermion parity measurements in a Majorana-based system. It also outlines our roadmap from single tetrons to multi-qubit arrays capable of quantum error correction, charting a concrete path toward scalable, reliable quantum computation.