The Marvel Cinematic Universe (MCU) is an media franchise and shared universe centered on a series of superhero films produced by Marvel Studios.
The first MCU film is Iron Man (2008), which began the films of Phase One 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". The films of Phase Four began with Black Widow (2021).