The HashiTalks 2022 conference highlighted various Kubernetes use cases with different HashiCorp products. Topics included secret management and rotation in highly regulated environments, features of Waypoint 0.7, connecting cloud-based microservices to on-premises legacy apps using Consul's mesh gateway, routing traffic outside the Kubernetes cluster network, creating a multi-context lab environment for Kubernetes, dynamic user creation with MySQL and HCP Vault, and integrating HashiCorp Vault for secure data backup.