Strengthening OAuth 2.0 with FAPI 2.0

OAuth 2.0 has long been the cornerstone of modern authorization. It is a consolidated technology that powers everything from social logins to complex enterprise integrations. Developers appreciate its flexibility, which allows them to adapt the framework to various scenarios like traditional web applications, single page applications, desktop and mobile environments. However, this flexibility is a double-edged sword. Because OAuth 2.0 is a framework rather than a rigid protocol, it provides a collection of specifications that developers can combine in different ways. In high-risk and regulated sectors like banking, healthcare, and insurance, this freedom creates a significant surface area for configuration errors and interoperability issues. This is where the FAPI profile steps in, providing a strict set of rules to ensure the highest levels of security and trust. The Flexibility Paradox of OAuth 2.0 The fundamental challenge with "vanilla" OAuth 2.0 is the vast number of optional feat