I just realized Google embeds AdMob into latest Google Play services (4+)
I was wondering, should I prefer https://developers.google.com/mobile-ads-sdk/docs/#play ov
If you want to integrate many ads SDK and if they are using Google play services as back-end support to deliver ads and you also want to show Admob banner ads then you should use it.
its very easy to use .just add goole play service lib project and then use
now you can simple add following snippet in activity where you want to show
AdView adView = (AdView)findViewById(R.id.adView);
AdRequest adRequest = new AdRequest.Builder().build();
adView.loadAd(adRequest);