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ÖBB-Infrastruktur AG designs and constructs railway infrastructure projects. It also operates railway stations, bridges, tunnels, railway crossings, hydroelectric power stations, and buildings. Its services include inspection and repair works, as well as providing railway-specific construction services. The company was founded in July 1969 and is headquartered in Vienna, Austria.

Galleria Di Base Del Brennero Brenner Basistunnel BBT SE is an Italian company that is focused on creating a future-oriented flat track through the Alps with the Brenner Basistunnel (BBT). The company is ultimately controlled by the Government of Italy and is based in Bolzano, Italy. The BBT is the core of the new Brenner railway between Munich and Verona. Gilberto Cardola has been the CEO of the company since 2019.

Österreichische Bundesbahnen-Holding AG engages in the holding and management of participations in companies of the ÖBB Group with focus on strategic orientation. It also provides infrastructure, transportation, and logistics services. The company was founded on April 20, 2004 and is headquartered in Vienna, Austria.

ÖBB-Technische Services GmbH provides passenger rail transportation. It engages in the management of railway vehicles including maintenance, modernisation, assembly, engineering, new build and reconditioning of vehicle components, plus development of testing and diagnostic equipment. The company was founded in 1995 and is headquartered in Vienna, Austria.

Harvard University engages in the provision of teaching and research. It has twelve degree-granting Schools in addition to the Radcliffe Institute for Advanced Study, offering a global education. The university was founded in 1636 and is headquartered in Cambridge, MA.

Schweizerische Bundesbahnen SBB provides railway passenger and freight transportation services. The company operates through passenger traffic, infrastructure, and freight divisions. Schweizerische Bundesbahnen was founded in 1902 and is headquartered in Bern, Switzerland.