AWS Vault is a credential management tool designed to securely store and access AWS credentials in development environments. The tool integrates with the operating system's secure keystore to store IAM credentials and generates temporary credentials for shell and application access. The tool maintains compatibility with AWS CLI tools and recognizes existing profiles and configuration files located in ~/.aws/config. AWS Vault generates temporary credentials from stored IAM credentials, providing an additional security layer by avoiding the exposure of long-term credentials. Installation is supported across multiple operating systems including macOS, Windows, and Linux through various package managers. The tool serves as a complementary solution to existing AWS CLI workflows while enhancing credential security practices for developers working with AWS services.