A computing architecture for providing a software component or feature of a first platform as a service to a second platform. An API request from a frontend of the second platform, including a user auth token providing access to the second platform, can be received by an authentication token proxy service that converts the user auth token into a user auth token of the first platform. With this token, subsequent API requests of a backend of the first platform from the frontend of the second platform can be served directly by the second platform.