# Build Kafka Streams Client Applications for Confluent Cloud Kafka Streams is a client library for building applications and microservices that process and analyze data stored in Apache Kafka®. With Kafka Streams and Confluent Cloud, you can transform, aggregate, and enrich data from one or more input topics and write results to output topics. For an interactive tutorial, see [Kafka Streams Quick Start](quickstart.md#client-kafka-streams-quick-start). For more information about building Kafka Streams applications, see [Kafka Streams for Confluent Platform](/platform/current/streams/overview.html). For details on upgrading Kafka Streams applications, see [Kafka Streams Upgrade Guide](/platform/current/streams/upgrade-guide.html). ## Related content - [Full Kafka Streams Documentation](/platform/current/streams/overview.html) - [Monitor Kafka Streams Applications](monitor-kafka-streams-apps.md#client-kafka-streams-monitor-apps) - [Apache Kafka Overview](/kafka/overview.html) #### 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).