Video narration
AWS Lambda is a serverless compute service from Amazon Web Services. Think of it as: you upload a small piece of code, called a function, and it runs only when something triggers it. That trigger can be an event or a request—like a file being uploaded, a button in an app being tapped, or an API call coming in. When the trigger happens, Lambda starts your code, does the work, and then stops. “Serverless” doesn’t mean there are no servers. It means you don’t have to set them up, patch them, or keep them running. AWS handles the infrastructure behind the scenes, so you focus on the code and the outcome. And scaling is automatic: if one request comes in, one copy can run; if a thousand come in at once, Lambda can run many copies in parallel, then scale back down when traffic drops. That’s why it’s useful: you pay for what you use, and your code responds instantly to events without you managing machines.