  The analytical expression for shortcuts to adiabaticity for any switching
time and any thermally isolated system performing a finite-time and weak
process is presented. It is based on the universal solution of the optimal
protocols of weak processes, where the extension to adiabatic processes was
made by means of the concept of waiting time. Two examples are solved to verify
the validity of such shortcuts: the typical case of oscillatory relaxation
function and the transverse-field quantum Ising chain. In the end, a discussion
about the limitations of the applicability of these shortcuts in quantum
annealing is made.
