The text discusses various advanced techniques and tools for managing Kubernetes deployments and enhancing security in GitOps workflows. It highlights the use of Argo Rollouts for progressive delivery and header-based routing, securing Argo CD in multi-tenant environments with application projects, and integrating GitOps secrets management using Argo CD, Hashicorp Vault, and the External Secret Operator. Additionally, it covers multi-service progressive delivery, temporary preview environments based on pull requests, and secure credentials management using the External Secrets Operator and AWS Secrets Manager. The text also showcases how companies have utilized Codefresh to build internal developer portals and different applications, along with promoting a GitOps certification to build skills and credibility in the field.