AWS Lambda is an AWS service that lets you run code without needing to provision or manage servers - which means that it is a type of a serverless compute service.
AWS Lambda = Needs a trigger Example: An app that automatically processes images as users upload them to an Amazon S3 bucket
It automatically manages the underlying infrastructure, scaling resources based on the volume of requests.
Charges apply only when your code is running.
How does AWS Lambda work?
Lambda use cases
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Real-time image processing for a social media application Why Lambda: It automatically scales based on uploads and charges only for the time spent processing each image.
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Personalized content delivery for a news aggregator A news aggregator uses Lambda to fetch and process news articles from multiple sources, then it tailors recommendations based on user preferences. When a user opens the application or performs a search, Lambda functions are triggered to retrieve data, run personalization logic, and return relevant content.
Why Lambda: It automatically scales with user traffic and reduces costs by running code only when users interact.****