Explain the concept of Azure Confidential Ledger and how it provides secure and tamper-evident data storage. Confidential Computing: Secure and tamper-evident data storage often relies on confidential computing technologies. Confidential computing ensures that data is processed and stored in a protected and isolated environment, often using hardware-based encryption and secure enclaves, such as Intel SGX or AMD SEV. This keeps data confidential even from the underlying infrastructure and protects against threats like malicious insiders. Immutable Data Storage: To ensure data is tamper-evident, an immutable data storage system is typically used. Once data is written to the storage system, it cannot be altered or deleted. Any attempts to modify data are logged and detected, providing evidence of tampering.