How do I manage discounts across multiple currencies?

As an e-commerce business expanding internationally, I'm struggling to create a consistent and fair discount strategy that works seamlessly across different currencies. I need to understand how to handle pricing, percentage discounts, and promotional offers when selling in multiple markets with varying exchange rates and economic conditions. My goal is to maintain profitability while offering attractive deals to customers worldwide without creating complex manual processes or risking financial losses due to currency fluctuations.