For real-time streaming applications, supporting hundreds of thousands of concurrent users in a reliable, secure, and auditable manner that is also cost effective requires different design considerations and additional AWS services to be implemented in a scalable manner. In such applications, you may need to plan for growth from one thousand events currently to a future of 15 million events per second. In the following sections, we will explore typical AWS services used for implementing a large-scale API-based architecture and analyzing streaming data in real time with Amazon Kinesis Analytics.