Serverless Architecture: Pros and Cons

Serverless computing, specifically AWS Lambda, promises zero server maintenance and auto-scaling. While the benefits are immense for startups, large organizations must weigh the architectural trade-offs.

The Pros

No OS patching, instant scaling, and you only pay for what you use. For highly variable workloads, serverless can drastically reduce your cloud bill. Also, it integrates perfectly with event-driven systems (see Event-Driven Architecture).

The Cons

Cold starts are the enemy of low-latency APIs. Vendor lock-in is practically guaranteed. Debugging distributed serverless applications is notoriously difficult without robust tracing tools.

Conclusion

Do not use serverless blindly. Use it for background jobs, webhooks, and bursty workloads, but stick to long-running containers for consistent, high-traffic core APIs.