Deploy code without worrying about infrastructure with serverless functions that scale automatically. Let your functions scale from zero to millions of invocations seamlessly based on demand without any capacity planning, trigger executions from HTTP requests, scheduled cron jobs, message queues, database events, or file uploads, and enjoy cost efficiency by paying only for actual execution time down to the millisecond with no charges for idle time. Write functions in your preferred language including Node.js, Python, Go, Java, Ruby, or .NET with full runtime support, manage environment variables and secrets securely with encrypted configuration, and minimize cold start latency with optimizations including provisioned concurrency and warm-up strategies. Monitor function invocations, execution duration, error rates, and costs with comprehensive dashboards, deploy multiple versions with aliases for blue-green deployments and gradual rollouts, and integrate with VPC for secure access to private databases and resources. Perfect for building scalable REST and GraphQL API backends, processing uploaded files and transforming data automatically, running scheduled maintenance tasks and batch jobs, handling webhooks from payment processors and third-party services, processing and resizing images on-demand, and ingesting and processing IoT sensor data streams.