I have developed a web app with NodeJS myself, and now I want to integrate it with Weebly. Here is the situation:

1. My NodeJS app is hosted on a cloud service provider, like AWS. It is a single page web app providing online service, but lack of functions like landing page, user management, subscription checkout, etc.

2. I want to use weebly to build the things left out ( landing page, signup page, login page, subscription page, etc.)

3. My app needs access control and resource restriction based on user subscription plans.

Is it possible to integrate them (without using iframe) ? What is the right way to do that?