What API call is used to gain temporary security credentials when authenticating using Web Identity Federation?

The API call that enables the retrieval of temporary security credentials when authenticating using Web Identity Federation is indeed "AssumeRoleWithWebIdentity." This function allows a user to assume a role by providing a web identity token, typically obtained from an external identity provider such as Facebook, Google, or Amazon Cognito. This temporary security credential can be utilized by applications running on devices or browsers, facilitating access to AWS resources without requiring AWS credentials directly.

The process typically involves the client application first obtaining a web identity token from the identity provider. The web identity token is then passed to the AssumeRoleWithWebIdentity API, which validates this token and returns temporary security credentials that have the permissions associated with the role assumed. This approach allows for secure, delegated access to AWS services based on externally authenticated users, enhancing both security and convenience.

The other options address different aspects of AWS's security and federation capabilities but do not pertain specifically to Web Identity Federation in the context of acquiring temporary security credentials. For instance, "AssumeRoleWithSAML" is focused on SAML (Security Assertion Markup Language) federated users. "GetFederationToken" pertains to the retrieval of credentials for a federated user without the involvement of web identities. "AuthenticateWeb