The center-of-mass energies available at modern accelerators, such as the Large Hadron Collider (LHC), and at forthcoming generation accelerators, such as the Electron-Ion Collider (EIC), offer us a unique opportunity to investigate hadronic matter under the most extreme conditions ever reached. In particular, they allow access to the so-called Regge-Gribov (or semi-hard) limit of QCD, characterized by the scale hierarchy
In this talk, I will discuss various aspects of high-energy QCD, specifically within the BFKL and saturation regimes, with a focus on the precision frontier.