Abstract: The Compact Linear Collider (CLIC) is a high-energy e+e- collider under development, aiming for centre-of-mass energies from a few hundred GeV to 3 TeV. In this lecture the concept of linear lepton colliders and precision measurements will be introduced. The two-beam acceleration scheme employed by CLIC will be described. Results from Monte Carlo simulation studies exploring the physics potential of CLIC will be presented, emphasizing Higgs and top-quark measurements and searches for physics beyond the standard model. In addition, cutting-edge hardware R&D performed for CLIC vertex, tracker and calorimetry will be shown.