Secure Token Service (STS)

A Secure Token Service (STS) is a system that issues digital security tokens to verify a user's identity. When you log in to a service, the STS checks your credentials and, if valid, provides a token that represents your identity and permissions. This token acts like a digital key, allowing you to access different services without needing to repeatedly enter your username and password. STS helps enhance security and streamline access across various applications, ensuring that only authorized users can gain entry to specific resources.