The tutorial by Gabriel Cerioni focuses on deploying Vault Agent with Kubernetes Delegates using shared volumes to enhance secure and reliable token management in Kubernetes environments. This advanced guide builds upon a previous article about Vault Agent integration and Harness, offering steps for setup, configuration, and management of multiple Vault servers to ensure seamless integration and security. It emphasizes using ConfigMaps, PersistentVolumes, and Secrets, clarifying that the Vault Agent is a HashiCorp component, not part of Harness. The guide outlines a strategy for managing one Vault server per environment, detailing the use of Service Config Variables and Harness Environment Names to maintain atomicity and avoid single points of failure. The tutorial further explores creating a more professional Vault Agent deployment, handling security concerns by storing sensitive information in Google KMS Secrets Manager, and using Helm charts for Kubernetes Manifest configuration. It concludes with instructions for sharing tokens with Delegate deployments, ensuring both Vault Agent and Delegate reside in the same Kubernetes namespace, and verifying integration through logging and readiness probes.