  We give a brief overview of the Yangian symmetry of Feynman integrals. After
a short introduction to the Yangian and integrability, we motivate the
emergence of integrable structures for Feynman integrals via the fishnet limit
of AdS/CFT. We discuss the resulting Yangian differential equations for
massless fishnets in four dimensions as well as generalizations to massive
propagators and generic dimensions. We also comment on the relation to momentum
space conformal symmetry and on examples in dimensional regularization. Finally
we sketch the recent application to fishnet integrals in two spacetime
dimensions and the curious identification of Yangian invariants with period
integrals of Calabi-Yau geometries.
