The 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. Phil Coulson, portrayed by Clark Gregg, is an original character to the MCU and the only character to appear across all its different media.
The first MCU film was Iron Man (2008), which began the first phase of films culminating in the crossover film The Avengers (2012). Phase Two began with Iron Man 3 (2013) and concluded with Ant-Man (2015). Phase Three began with Captain America: Civil War (2016) and concluded with Spider-Man: Far From Home (2019). The first three phases in the franchise are collectively known as "The Infinity Saga". Wikipedia
The first MCU film was Iron Man (2008), which began the first phase of films culminating in the crossover film The Avengers (2012). Phase Two began with Iron Man 3 (2013) and concluded with Ant-Man (2015). Phase Three began with Captain America: Civil War (2016) and concluded with Spider-Man: Far From Home (2019). The first three phases in the franchise are collectively known as "The Infinity Saga". Wikipedia
