If supersymmetry exists at or around the TeV scale, a wealth of new particles will be produced at the LHC. The phenomenology of these particles will depend on the breaking of SUSY at some high energy. In this talk, I will discuss possible LHC measurements and strategies to derive information on the high-scale boundary conditions of the SUSY breaking. An important point in this respect will be the issue of theoretical uncertainties in spectrum computations. Moreover, I will discuss the role of precision measurements at an ILC and implications for the relic density of dark matter.