In this article I provide an overview of the current state of scattering within lattice QCD, along
with ongoing projects that examine weak decays involving scattering states as either final or
intermediate states. Significant progress has been made in the study of multi-hadron weak decays,
opening the door for scattering calculations to make meaningful contributions to flavour physics
and further establishing lattice QCD as the key non-perturbative tool for QCD predictions. In
addition to discussing new calculations, I also highlight recent advancements in finite-volume
formalisms, which enable the exploration of previously inaccessible channels.
