  Since its commissioning in 1991, the ep collider HERA has been running
successfully for almost a decade without stopping improving its performance. In
this report, the inclusive cross section and structure function measurements
for the deep inelastic scattering of neutral and charged current processes in
the full HERA kinematic domain are reviewed. The results are compared with the
Standard Model expectations for the deep inelastic scattering processes. The
new insights into the proton structure and on the underlying strong and
electroweak interactions are discussed.
