CGC/Saturation Approach: Soft Interaction at the LHC Energies

This lecture is prepared for the LISHEP2018 school (September 9–14, Salvador, BA, Brasil). It is our first attempt to give a review of our model for soft interaction at high energy. This model includes everything that we know about the effective theory of QCD at high energies: Colour Glass Condensate approach. However, we have to include the phenomenological input about the structure of the colliding hadrons. We demonstrate in this lecture that we are able to describe not only the soft interaction classics: total, elastic and diffractive cross sections but also the DIS structure function as well as inclusive production and correlations in the processes of multi particle generation.