Each trail-register ping needs a unit conversion and a field drop before it lands. The payload is tiny and stateless. Which official lightweight transform should run on the stream?

Short Explanation

Think of a tiny, stateless unit conversion and a field drop on each trail ping. AWS Lambda. A multi-hour Glue lake join is the wrong ceiling.

Full Explanation

AWS Lambda is the per-record, stateless streaming transform. It is not the tool for multi-hour lake joins. EMR and Glacier are not that inline map.

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