The feature that I've found most valuable is the replay. That is one of the most valuable in our business. We are business-to-business so replay was an important feature - being able to replay for 24 hours. That's an important feature.
Amazon Kinesis offers remarkable scalability and real-time data streaming, ingesting gigabytes of data quickly and integrating with Lambda functions for immediate processing. It supports data replay for 24 hours and has multi-partition capabilities but lacks first-in, first-out queuing. Default settings could increase costs, and complex sharding strategies need better documentation. While it may be expensive with enhanced fan-out, its machine learning capacity requires improvements for broader application.
