Measurements of multi-boson production including vector-boson scattering at ATLAS

Measurements of multi-boson production at the LHC probe the electroweak gauge structure of the Standard Model for contributions from anomalous couplings. In this proceeding we present recent ATLAS results on the measurement of electroweak production of a Z$\gamma$ pair in association with two jets, the first observation of three W bosons production, as well as the observation of the W pair production in photon-induced collisions. Also discussed is the measurement of differential cross-sections of four-lepton events and constraints on a model based on spontaneously broken B-L gauge symmetry. Moreover, precise boson and di-boson differential cross-section measurements are interpreted in a combined Effective Field Theory analysis, allowing to systematically probe gauge boson self-interactions.