They asked me to design a scalable system for processing real‑time data streams and explain how I would ensure reliability, observability, and cost efficiency
Sigiloso
I described a microservices‑based architecture using event‑driven design with Kafka for streaming, AWS Lambda for processing, and CloudWatch for monitoring. I explained trade‑offs between throughput and latency, and how I’d use feature flags and CI/CD pipelines for safe deployments.