Is Galaxy Apps a legimate App? (kitkat, samsung galaxy app 3)

So on my samsung galaxy tab 3 running android kitkat, I noticed something in the notification bar. An app named samsung apps was downloading new apps, as if it was like the normal app store. One was Samsung billing. After each download I was prompted, "Google may regularly check installed apps for potentially harmfull behaviour. Learn more in Google Settings > Verify apps." It was followed by an accept and decline. I just pressed the back button and it went away. Then I noticee samsung apps was renamed Galaxy Apps. Is this a legitimate new update? Did anyone else get this? (If you use a samsung device).