  Fast interpolation-grid frameworks facilitate an efficient and flexible
evaluation of higher-order predictions for any choice of parton distribution
functions or value of the strong coupling $\alpha_s$. They constitute an
essential tool for the extraction of parton distribution functions and Standard
Model parameters, as well as studies of the dependence of cross sections on the
renormalisation and factorisation scales. The APPLfast project provides a
generic interface between the parton-level Monte Carlo generator NNLOJET and
both the APPLgrid and the fastNLO libraries for the grid interpolation. The
extension of the project to include hadron-hadron collider processes at
next-to-next-to-leading order in perturbative QCD is presented, together with
an application for jet production at the LHC.
