  The last decade has seen the development of a wide set of tools, such as
wavefront shaping, computational or fundamental methods, that allow to
understand and control light propagation in a complex medium, such as
biological tissues or multimode fibers. A vibrant and diverse community is now
working on this field, that has revolutionized the prospect of
diffraction-limited imaging at depth in tissues. This roadmap highlights
several key aspects of this fast developing field, and some of the challenges
and opportunities ahead.
