Recent advancements in sequencing targeted therapies are reshaping HR-positive, HER2-negative metastatic breast cancer management, emphasizing the critical role of NGS in personalizing treatment decisions. Key factors include considering CDK 4/6 inhibitors, biomarker assessment, and sequencing new therapies like inavolisib and capivasertib. Trials such as SOLAR-1, INAVO120, and CAPItello-291 highlight improved progression-free survival and tolerable adverse effects. NGS is crucial for identifying PIK3CA/AKT mutations to determine optimal frontline and second-line treatments.