Marvel Cinematic Universe (MCU) is an American media franchise and shared universe centered on a series of superhero films, independently produced by Marvel Studios and based on characters that appear in American comic books published by Marvel Comics. The franchise also includes comic books, short films, television series, and digital series. The shared universe, much like the original Marvel Universe in comic books, was established by crossing over common plot elements, settings, cast, and characters.

Source : https://en.wikipedia.org/wiki/Marvel_Cinematic_Universe

As you can see nowdays so many superhero movies it is like superhero movies become trend now.You can see a lot of superhero movies in past 15 years.MCU(Marvel Cinematic Universe) make that superhero movie genre become popular.MCU.The first MCU film was Iron Man (2008), which began the first phase then follow by other movie like Incredible Hulk,Captain America,Thor,Avenger and so on.In my opinion about marvel movies is quite good I think.Eventhought the plot is just decent the action scenes is awesome.I love how they introduce the character and build up the universe.They can make fans feel care about the character in their movies.Me and my best friend always go to theater when new marvel movie came out.MCU did a good job bring the comic book story and character into movie and they did good job too in casting.Maybe the one can rival this Marvel success is DC, lately DC try to catch up what MCU have arcieved.Overall in my opinion MCU(Marvel Cinematic Universe) did a great job on their movies.