# 6. Technical Architecture

- [6.1 Blockchain & Smart Contracts](/aidol-docs/6.-technical-architecture/6.1-blockchain-and-smart-contracts.md): AIDOL is implemented on either a Layer-1 or Layer-2 blockchain, chosen for its scalability and ability to handle frequent microtransactions. Key features include:
- [6.2 Data & AI Infrastructure](/aidol-docs/6.-technical-architecture/6.2-data-and-ai-infrastructure.md)
- [6.3 Oracles & Off-Chain Services](/aidol-docs/6.-technical-architecture/6.3-oracles-and-off-chain-services.md): External data providers (e.g., Chainlink) feed real-world information into the blockchain to support:
