Serverless
Serverless is a cloud-hosted execution model: billed per request, auto scaling to zero, with developers managing no servers.
Purpose
Eliminate operational burden, pay per use, scale automatically.
Mechanism
FaaS (Lambda/Cloud Functions): event-triggered function execution billed by invocations + execution time. BaaS: managed backend services (DB/storage/auth). Cold-start latency. Fits event-driven and bursty workloads.
Use cases
- Event-driven
- Pay per use
- Zero operations