Vault

Deploying Vault in production requires configuring high availability, secure storage, and access policies, which can be daunting, especially with dependencies on tools like Docker for development and testing.

Critical features like replication, namespaces, and control groups are only available in the paid Vault Enterprise version, limiting the open-source edition for advanced use cases.

Running Vault necessitates regular backups, updates, and monitoring to ensure availability and security, adding significant operational overhead beyond initial deployment.

Writing and managing fine-grained access control policies requires deep understanding of Vault's policy language and security concepts, which can be error-prone for new users.