Amazon Timestream is a fast, scalable, and fully managed time-series database for IoT and operational applications. It can ingest millions of events per second and queries trillions of events, at a cost of 1000x faster and 1/10th the price of relational databases. Timestream is optimized for time-series data and provides built-in functions for analysis. It offers flexible data storage tiers of memory, magnetic disk, and SSD.