Professional wrestling has a long history of running pay-per-view events. WWE (then WWF) launched its first pay-per-view event in 1985 with its annual flagship event WrestleMania and has run numerous others throughout the years. Although it still offers its events via traditional PPV outlets, they have also been included at no additional charge as part of a larger, subscription-based streaming service known as WWE Network. The service also includes original programming (such as documentary-style series and other wrestling programs) and an on-demand archive of events and television episodes from WWE's library. Following WrestleMania 34, the service had 2.12 million subscribers. Other major organizations such as World Championship Wrestling, Extreme Championship Wrestling, Impact Wrestling, Ring of Honor, and All Elite Wrestling have also run pay-per-view events.