Amazon Quantum Ledger Database.
Maintain an immutable, cryptographically verifiable log of data changes:
Track and maintain a sequenced history of every application data change using an immutable and transparent journal.
Trust the integrity of your data. Built-in cryptographic verification enables third-party validation of data changes.
Build correct, event-driven systems with QLDB ACID transactions and support for real-time streaming to Amazon Kinesis.
Start small and pay only for what you use with serverless architecture that provides automatic storage and resource scaling.