OpenID Connect (OIDC) and OAuth are two protocols that developers can use to manage identity and access in applications, complementing each other by providing authentication and authorization, respectively. OIDC is an identity layer built on OAuth 2.0, allowing applications to authenticate users through trusted platforms, while OAuth facilitates the authorization of third-party apps to access user data without directly handling user credentials. OAuth 2.0, an update from its predecessor OAuth 1.0, is more flexible and secure, using HTTPS for encryption. Although OIDC adds a layer of security to OAuth by introducing authentication, vulnerabilities in an app's OAuth implementation can impact OIDC since it relies on OAuth. Both protocols have distinct purposes, with OAuth managing access and OIDC handling user authentication, and are often used together to simplify and secure login processes. Descope offers a solution to streamline the implementation of these protocols, allowing developers to easily integrate OAuth social logins and passwordless methods into their applications.