Development of the Ariane 3 was authorized in July 1979, months prior to the Ariane 1's first flight. Drawing heavily upon both the design and infrastructure of the Ariane 1, the new launcher was concurrently developed alongside the Ariane 2, with which it shared much of its design. It represented an advancement of the Ariane 1 rather than a replacement but was capable of lifting even heavier payloads into Geostationary transfer orbit (GTO) as well as launching two satellites via one launch. Developed largely within a two-year window, the Ariane 3 performed its maiden flight on 4 August 1984, actually flying in advance of its Ariane 2 sibling. During its brief service life, having performed its final launch on 12 July 1989, the Ariane family had become increasingly commercially competitive, becoming the market-leading heavy launch vehicle in the world by the late 1980s.