Developers building receipt-scanning or cashback applications face massive infrastructure challenges handling burst traffic and OCR processing without overloading databases or incurring high cloud costs. Current serverless options require complex manual tuning for concurrency and queuing, creating a barrier to launching competitive fintech or retail apps.

Developers in Cluster A are struggling to build scalable backends for high-throughput tasks (like processing thousands of requests), which is the exact technical requirement for building the receipt-scanning/cashback applications seen in Cluster B.