We review the work discussed and developed under the topic ``Resummation'' at
Working Group 2 ``Multijet final states and energy flow'', of the HERA-LHC
Workshop. We emphasise the role played by HERA observables in the development
of resummation tools via, for instance, the discovery and resummation of
non-global logarithms. We describe the event-shapes subsequently developed for
hadron colliders and present resummed predictions for the same using the
automated resummation program CAESAR. We also point to ongoing studies at HERA
which can be of benefit for future measurements at hadron colliders such as the
LHC, specifically dijet Et​ and angular spectra and the transverse momentum
of the Breit current hemisphere.Comment: 15 pages, 6 figures. Submitted to the HERA-LHC workshop proceeding