Among proposed future projects for particle physics, the Muon Collider has recently attracted significant attention. By combining features of both electron–positron and hadron machines, it offers a potentially powerful environment for exploring high-energy interactions. While technological challenges remain, recent studies suggest none are fundamentally prohibitive, motivating continued research in this direction.
In this talk, I will briefly introduce the Muon Collider in the context of the Update of the European Strategy for Particle Physics and outline the physics opportunities it could offer. I will focus in particular on studies of electroweak interactions at previously unexplored energy scales. After discussing the role of vector boson fusion in this regime, I will review the ideas of the collinear approximation and electroweak factorisation. Finally, I will present the emerging framework of Electroweak Parton Distribution Functions and discuss their relevance for describing high-energy processes.