S3 Object Lambda allows you to add your own code to S3 GET requests to modify and process data as it is returned to an application

[Amazon Web Services]

With S3 Object Lambda you can add your own code to S3 GET requests to modify and process data as it is returned to an application. For the first time, you can use custom code to modify the data returned by standard S3 GET requests to filter rows, dynamically resize images, redact confidential data, and much more.

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