The LHC, Tevatron and HERA experimental results are reviewed with a focus on the low-$x$ kinematic domain where the BFKL dynamics, saturation effects and the gluon's transverse momentum play a role.
In particular, the low-$x$ DIS region, the central exclusive production in the $\mathrm{p}\mathrm{p}$ and $\mathrm{p}\mathrm{A}$ collisions and the forward jets produced in $\mathrm{p}\mathrm{p}$ and $\mathrm{p}\mathrm{A}$ are discussed.