For a global e-commerce platform, the ability to process and analyze data in real-time is crucial for timely decision-making and customer experience. The two most critical challenges are achieving low latency in data processing to ensure real-time insights and handling large volumes of rapidly changing data from multiple sources. Additionally, ensuring data consistency across distributed systems is important but secondary to the immediate need for real-time processing and scalability. Minimizing storage costs, while important, does not directly impact the real-time analytics capability as significantly as the other factors mentioned.