Kinesis is a cloud-based service provided by Amazon Web Services (AWS) that allows users to process and analyze real-time streaming data. It enables the collection, processing, and analysis of data from various sources, such as social media feeds, IoT devices, and logs, in a scalable and efficient manner. With Kinesis, businesses can gain insights from their data as it flows in, allowing for timely decision-making. The service supports multiple applications, including real-time analytics, data ingestion, and machine learning, making it a versatile tool for organizations looking to harness the power of streaming data.