The last decades of high energy physics revealed, that in ultra-relativistic
ion-ion collisions, a strongly interacting quark gluon plasma (sQGP) is created.
Varying the collision energy and system size allows for the investigation of the
phase diagram of QCD matter at different baryochemical potentials and
temperatures. Varying the system size may also reveal the influence of system
lifetime on the final state observables. In the recent years, it became a more
and more important question how the matter created in small but energetic
collision systems behaves, and the extent of similarity between small and large
systems is investigated at several experiments. One of the most important
results of the recent years was the elliptic and triangular flow in p+Au, d+Au
and He3+Au collisions at sqrt(sNN)=200 GeV at PHENIX. In this talk we will
review these results, along with a few other important flow measurements from RHIC and LHC.