The document discusses using Vault to securely manage secrets for applications deployed to Pivotal Cloud Foundry (PCF). It describes the typical Vault workflow, how Spring Cloud Vault can integrate Vault with PCF applications, and challenges with this approach. It then introduces the Vault PCF Service Broker, which solves issues by binding applications to Vault upon deployment, generating unique policies and tokens, and injecting credentials as environment variables. It demonstrates the service broker configuration and usage, and discusses limitations including that apps are still responsible for interacting with Vault and bootstrapping secrets.