Can you recommends any android app that can connect to your Google drive, business social media and preload with pictures of current discount and offers and continuously show marketing content in the store with pictures, offers and tweet or Instagram post or hashtag for my company
I have two recommendations for you:
1.) You would need to hire a developer who can develop apps for the tv to make an custom app for your company that you can set as the screensaver provider and it gets its images from a central server which aggregates all other images from your drive and other social media.
2.) another solution i would recommend you is using a installable web app on your android tv which would do the same stuff as the other app but without being set as the screensaver provider. This solution would cost significantly less to be developed for your company and would have the same functionality.