Why it matters

Serverless has broad use. Understanding differences shapes cloud choice.

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The architecture

Model: event triggers function. Auto-scaling.

Limits: memory, duration, concurrency vary.

Serverless FaaSLambdaAWS matureCloud Functions 2nd genGCPAzure Functionsconsumption planLambda most mature ecosystem; others catching up
FaaS comparison.
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How it works end to end

Cold start: all have; ranges 100ms-3s.

Concurrency: model varies — Lambda per-instance, Cloud Run per-container.

Runtime versions: track deprecations.

Pricing: per invocation + duration.