  One of the biggest challenges in contemporary physics is understanding the
origin and dynamics of the internal structure of hadrons which, at a
fundamental level, is described by quantum chromodynamics (QCD). Taking great
prominence amongst hadrons are pions and kaons which, despite being the
lightest hadrons in nature, their very existence is intimately connected to
those mechanisms responsible for almost all of the mass of the visible matter.
In this manuscript we discuss many aspects of the pion and kaon structure via
light front wave functions and generalized parton distributions, and a
collection of other distributions and structural properties that are inferred
therefrom.
