Abstract
The H1 and ZEUS experiments have now completed their data collection and are in the process of extracting their final high precision results on the proton structure and its internal dynamics. The recent combination of the available published results from HERA I has significantly improved the knowledge of low x quark and gluon densities, which results in higher precision LHC predictions at the electro-weak scale. The determination of high x parton densities is still limited by statistical precision and will benefit from the analysis and combination of the full HERA II data samples. Investigations of the QCD dynamics through inclusive NLO QCD fits, as well as with measurements of the longitudinal structure function FL and of heavy quarks production, show that the DGLAP approximation is valid in the bulk of the phase space covered at HERA.
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