Amazon Managed Blockchain

Amazon Managed Blockchain is a fully managed service that makes it easy to join public networks or create and manage scalable private networks using popular open-source frameworks.

Key Features

Supported Frameworks:
- Hyperledger Fabric: For private, permissioned networks (enterprise).
- Ethereum: For public or private networks.
- Bitcoin (via AMB Access).
- Polygon (via AMB Access).
Serverless Access: AMB Access provides instant, serverless access to blockchains.
AMB Query: Standardized APIs to read data from multiple blockchains without parsing raw data.
Scalable: Easily add new members to the network.

Exam Tips

"Hyperledger Fabric" / "Ethereum": The answer is Managed Blockchain.
"Decentralized ledger" / "No central authority": Blockchain.
Ledger vs Blockchain:
- QLDB (Quantum Ledger Database): Centralized, owned by one authority, immutable history. ("DMV records", "Supply Chain internal").
- Managed Blockchain: Decentralized, multiple parties trust the network, not a central authority. ("Banking consortium", "Cross-company supply chain").

Common Use Cases

Financial trading and settlement.
Supply Chain tracking (multi-party).
Retail loyalty programs.
Identity management.