# Set up event-based S3 file ingestion with AWS Lambda for free

DevFeed: [Set up event-based S3 file ingestion with AWS Lambda for free](<https://devfeed.tech/articles/set-up-event-based-s3-file-ingestion-with-aws-lambda-for-free-18521.md>)

Original publisher: [Read original article](<https://www.tinybird.co/blog/how-to-set-up-event-based-ingestion-of-files-in-s3-for-free>)

Author: Alasdair Brown

Published: 2023-06-30T00:00:00Z

Content type: tutorial

Language: en

Sources: [Tinybird](<https://devfeed.tech/sources/tinybird.md>)

Topics: [Amazon S3](<https://devfeed.tech/topics/amazon-s3.md>), [AWS Lambda](<https://devfeed.tech/topics/aws-lambda.md>), [Amazon Web Services](<https://devfeed.tech/topics/aws.md>)

Tags: [architecture](<https://devfeed.tech/tags/architecture.md>), [aws](<https://devfeed.tech/tags/aws.md>), [aws-lambda](<https://devfeed.tech/tags/aws-lambda.md>), [event](<https://devfeed.tech/tags/event.md>), [files](<https://devfeed.tech/tags/files.md>), [free](<https://devfeed.tech/tags/free.md>), [i-built-this](<https://devfeed.tech/tags/i-built-this.md>), [s3](<https://devfeed.tech/tags/s3.md>)

## AI overview

A tutorial describing an event-based architecture for ingesting files from S3 when new files arrive, with no polling and no Lambda costs.

## Source excerpt

Set up event-based ingestion of S3 files for free. No Lambda costs, no polling. This architecture triggers on new file arrivals.