Hadronization is a process of transitioning from colored partons, quarks and gluons, to the colorless objects -hadrons. It lays in the heart of fundamental theory of strong interaction, QCD, where it can be factorized into two parts. When a highly virtual parton radiates gluons or splits into a quark-antiquark pair, one can theoretically describe this process by QCD evolution equations. However, when the final “bleaching” of partons into hadrons takes place, this process is dominated by nonperturbative QCD effects and cannot be addressed theoretically. For that reason, description of hadronization process often relies on modeling and phenomenology which are tested against an actual data. Over the past couple decades, a wealth of data have become available from DESY, Jefferson Lab, Fermilab, and RHIC which all bring different kinds of information on parton propagation and hadron formation. The most direct information on hadron formation comes from Deep-Inelastic Scattering (DIS) and will be discussed in the present talk in the context of Jefferson Lab data obtained using a 5 GeV electron beam and CEBAF Large Acceptance Spectrometer (CLAS) in Hall B. It is to be hoped that the studies of cold QCD matter, once matured, can influence the interpretation of what is seen in the hot dense systems (LHC), in addition to their intrinsic interest for QCD.