Kube-secret-syncer is an open source Kubernetes operator that syncs secrets from AWS Secrets Manager, providing sophisticated access control, templated fields, and caching to reduce costs. This solution addresses the limitations of existing projects by offering a secure and flexible way to manage secrets in Kubernetes. By utilizing caching, Kube-secret-syncer substantially reduces costs when syncing large numbers of secrets, while also enabling fine-grained control over secret access through IAM roles. The operator's templated fields feature allows for the use of values from multiple AWS Secrets Manager secrets in one Kubernetes secret, making it a valuable tool for managing complex secret configurations.