IT & Technology · Cloud ComputingEasy

Lambda Function

USUK

A serverless function that executes code in response to events without managing servers.

Also: AWS Lambda · FaaS

Definition

A lambda function (or cloud function) is a serverless compute service that runs code in response to triggers such as HTTP requests, database changes, message queue events, or scheduled jobs, without requiring provisioning or managing servers. The cloud provider handles scaling, availability, and infrastructure. Billing is per-invocation and execution duration. AWS Lambda, Google Cloud Functions, and Azure Functions are the major implementations. Lambda functions excel at event-driven workloads, ETL, and API backends.

Example

“An AWS Lambda function triggers every time a new image is uploaded to S3, automatically generating thumbnails in three sizes and storing them back in S3 within milliseconds, with no servers to manage.”

Synonyms

serverless function
cloud function
FaaS function
event function

Antonyms / Opposites

always-on server
persistent process

Images

CC-licensed · free to use

Video

serverless
aws
event-driven
api-gateway

Dictionary Entry

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