When Would You Use Streaming?

Proving Streaming ROI The real question isn't "batch or stream?" The interviewer wants to hear: "Can you justify the operational cost of streaming to a VP who's staring at a $400K/year infrastructure bill?" Streaming pipelines cost 3-10x more than equivalent batch jobs. Your answer needs a business case, not a technical preference. Show the math or lose the room. The ROI calculation has three components: the value of reduced latency, the cost of streaming infrastructure, and the hidden cost of operational complexity. Most candidates only calculate the first one. The interviewer wants to hear all three. Here's the answer framework for building a streaming business case. Start with: quantify the value per minute of reduced latency. For fraud detection, each minute of delay has a measurable d