Avengers Endgame felt like a proper goodbye for the Marvel sequel which created an interconnected world of superheroes with Iron Man as its first. Ten years ago, Iron Man kicked off the Marvel Cinematic Universe, paving the road to where we are now. Since the 2008's Iron Man, Marvel has had a tradition of including post-credits scene with each of its movies. According to Technobuffalo, the "endgame" in Avengers: Endgame refers to a line spoken by 'Doctor Strange' in Avengers: Infinity War. With only a few Avengers left and half of the universe gone, the stakes have never been higher.

Source: Daily Nation April 29, 2019 12:33 UTC