The Large Hadron Collider beauty (LHCb) experiment has achieved remarkable milestones in
the quest for Beyond the Standard Model (BSM) physics through its extensive exploration of rare
decays, precise measurements of the Cabibbo-Kobayashi-Maskawa (CKM) matrix elements, and
investigations into exotic hadrons. Additionally, it has made significant contributions to tests of
lepton universality, charm physics, and electroweak physics. The upcoming LHCb Upgrade II,
building on the successes of Runs 1 and 2, aims to further our understanding of fundamental
particles and interactions by probing new physics phenomena. This article provides an overview
of the scientific highlights of LHCb, the rationale for Upgrade II, and the key elements of the
upgraded detector.