The HashiCorp Vault Developer Experience team has introduced three sample applications in C#, Go, and Java to demonstrate using Vault in a real-world environment. These are cloneable, out-of-the-box examples that require no previous knowledge of Vault. They cover static secrets, dynamic secrets, authentication, and token renewal features. The first blog post focuses on static secrets, where Vault can encrypt and store sensitive information like API keys in its persistent storage, allowing applications to retrieve the secrets only when needed.