# Kafka Streams Developer Guide for Confluent Platform The Kafka Streams Developer Guide shows you how to write, configure, and run a Kafka Streams application on Confluent Platform. A *|kstreams| application* is a Java program that uses the Kafka Streams library to read from Apache Kafka® topics, process records in real time, and write results back to Kafka topics. The Kafka Streams API is built for mainstream developers, making it simple to build stream processing applications, support a developer-friendly deployment, and serve most common use cases. This guide gives you an overview of the API with examples, configuration options, and demos. #### NOTE This website includes content developed at the [Apache Software Foundation](https://www.apache.org/) under the terms of the [Apache License v2](https://www.apache.org/licenses/LICENSE-2.0.html).