How does MoE routing work?

Could you please elaborate on the mechanism behind MoE routing? I'm particularly interested in understanding how it operates and what are the key factors that contribute to its effectiveness. Additionally, I'm wondering if there are any limitations or challenges associated with this routing technique, and how they might be addressed. Lastly, I'm curious about the potential applications of MoE routing in the realm of cryptocurrency and finance, and how it could potentially revolutionize the industry.