What is Serverless computing?

Serverless, despite its name, does not mean there are no servers involved. It refers to a cloud computing model where the cloud provider manages all infrastructure, allowing developers to focus solely on writing and deploying code.

One of the key benefits is automatic scalability -- applications can handle any number of requests without developers needing to worry about the underlying infrastructure's capacity.

Serverless computing offers cost savings as users are charged based on actual usage (pay-per-execution), not for maintaining idle servers. You only pay when your code runs.

An e-commerce site uses AWS Lambda to process orders. During Black Friday, the system automatically scales to handle 100x normal traffic without any manual intervention, and costs return to normal levels after the event.

Serverless applications inherently have high availability and fault tolerance, as the cloud provider manages replication and availability across different zones.