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Serverless sounds like magic, but it just means building apps without managing servers. This lesson covers the core idea and why it matters.

Serverless computing is a model where the cloud provider provisions and scales servers for you. You write code, the cloud runs it — no servers to touch.

Traditional hosting means renting a server, installing an OS, and owning patches, security, and scaling. Serverless drops all that — you just provide code.

The biggest win: no server management. No OS patching, no load balancers, no capacity planning — your time goes straight to application logic.

With the pay-per-execution model you pay only while your code runs — for compute time and requests — and nothing at all when the app sits idle.

Automatic scaling handles traffic surges for you. No manual config — your app absorbs spikes and drops and can serve millions of requests untouched.

Serverless means faster development: with infrastructure abstracted away, you spend your time shipping features and iterating, not on setup.

Clearing up serverless myths: servers do exist (the provider runs them), it is not always cheaper, and it is more than just functions — databases and gateways too.

Serverless shines for event-driven apps, scalable web APIs, data processing on streams or schedules, and microservices broken into small services.

Which of the following is a key characteristic of serverless computing?

Recap: serverless lets the provider manage servers, giving you no-ops, pay-per-execution, and auto-scaling. Next up: AWS Lambda.