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# External login responsibilities

> Use this reference to identify which part of the authentication flow performs each action.

Use this reference to identify which part of the authentication flow performs each action.

| Component        | Responsibility                                                                                   |
| ---------------- | ------------------------------------------------------------------------------------------------ |
| Login form       | Collects credentials and calls the login endpoint.                                               |
| Login system     | Validates the user, creates or receives the signed JWT, sets the cookie, and redirects the user. |
| Destination page | Loads a full Experience page or a page with embedded Experience components.                      |
| JWKS endpoint    | Publishes the public key that Zuora uses to verify the JWT.                                      |