Could someone tell me the difference between API gateway and mobile app gateway?
Is there integration between them? how mobile app gateway pushes notifications to Apple and Android.
The API Gateway is the core product. The Mobile API Gateway is simply an extension of the API Gateway. You go thru the normal install/configuration of the API Gateway and then once that is complete you can install the Mobile API Gateway via a "solution kit." Once the Mobile API Gateway solution kit is installed you will see a folder in your services list call MAG-<version> as well as a bunch of new assertions show up in your assertion palette.
The MAG creates an endpoint for sending push notifications. There is some configuration needed to get this working. You can read more here: Configure Push Notification - CA Mobile API Gateway - 3.2 - CA Technologies Documentation
Thank you very much for your quick reply.