Description: The Security Token Service (STS) is a fundamental tool in the field of cybersecurity that issues security tokens for authentication and authorization purposes. These tokens allow users and applications to securely access resources, ensuring that only those with the appropriate credentials can interact with critical systems. STS is based on security standards such as SAML (Security Assertion Markup Language) and OAuth, facilitating interoperability between different platforms and services. Its implementation is crucial in various environments, including cloud and on-premises setups, where identity and access management becomes more complex due to the distributed nature of resources. Additionally, STS helps mitigate risks associated with unauthorized access by providing a robust mechanism to validate identities and permissions. In a world where cyber threats are becoming increasingly sophisticated, the use of security tokens has become a standard practice to protect web applications, systems, and services, effectively integrating into security strategies and network defense.