Which AWS service is primarily designed for real-time data streaming?

Amazon Kinesis is primarily designed for real-time data streaming, making it the ideal choice in this scenario. Kinesis provides the capability to collect, process, and analyze real-time streaming data at scale. Its architecture allows for the ingestion of a continuous stream of data from various sources, such as IoT devices, log files, and social media feeds, enabling applications to respond to changes or events in real-time.

Kinesis can be beneficial for scenarios like real-time analytics, log and event data collection, and real-time metrics tracking. It supports multiple components, including Kinesis Data Streams, Kinesis Data Firehose, and Kinesis Data Analytics, each managing aspects of data capture, delivery, and processing in real-time.

The other AWS services listed, such as Amazon S3, Amazon RDS, and Amazon Athena, are not specifically built for real-time data streaming. Amazon S3 is primarily a storage service for data objects, RDS is designed for relational database management, and Athena is an interactive query service that allows you to analyze data stored in S3 using standard SQL, but they do not provide the real-time streaming capabilities that Kinesis offers.