# Use the KPL with Amazon Data Firehose
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If you use the Kinesis Producer Library (KPL) to write data to a Kinesis data stream, you can use aggregation to combine the records that you write to that Kinesis data stream. If you then use that data stream as a source for your Firehose delivery stream, Firehose de-aggregates the records before it delivers them to the destination. If you configure your delivery stream to transform the data, Firehose de-aggregates the records before it delivers them to AWS Lambda. For more information, see [Writing to Amazon Firehose Using Kinesis Data Streams](https://docs.aws.amazon.com/firehose/latest/dev/writing-with-kinesis-streams.html).