Which Azure resource can provide centralized control over key management for sensitive projects?

Azure Key Vault is designed specifically to handle key management and provide secure storage for sensitive information such as cryptographic keys, secrets, and certificates. It enables organizations to centrally control access to these key materials, allowing for enhanced security protocols and policy compliance. By utilizing Azure Key Vault, teams can manage keys used for encrypting data, controlling access to sensitive information across applications, and maintaining a robust security posture.

The integration of Azure Key Vault with other Azure services simplifies the management of sensitive data, enabling developers and security teams to build applications that utilize these keys securely without needing to directly handle them in the source code. This centralization fosters better governance, audit logging, and the enforcement of policies around key access.

The other options listed do not focus on key management in the same way. Azure Bastion provides secure remote access to virtual machines, the Azure Import/Export service is used for transferring large amounts of data to and from Azure, and Azure Resource Manager serves as a deployment and management service for Azure resources. None of these options support centralized control over key management, which is why Azure Key Vault stands out as the appropriate resource for this purpose.