In the context of spaceflight, a launch campaign is the set of activities which prepare a launch vehicle

Launch vehicle

In spaceflight, a launch vehicle or carrier rocket is a rocket used to carry a payload from the Earth's surface into outer space. A launch system includes the launch vehicle, the launch pad and other infrastructure....

 for lift-off.

Activities during the launch campaign include launch vehicle assembly, integration of the payload, fueling of the vehicle, and preparing the launch pad

Launch pad

A launch pad is the area and facilities where rockets or spacecraft lift off. A spaceport can contain one or many launch pads. A typical launch pad consists of the service and umbilical structures. The service structure provides an access platform to inspect the launch vehicle prior to launch....

, the launch range and tracking stations.

For a NASA expendable launch vehicle, the launch campaign begins approximately 45 days prior to launch.

Parallel campaigns

Arianespace

Arianespace

Arianespace SA is a French company founded in 1980 as the world's first commercial space transportation company. It undertakes the production, operation, and marketing of the Ariane 5 rocket launcher as part of the Ariane programme....

, the contractor responsible for launching the Ariane 5

Ariane 5

Ariane 5 is, as a part of Ariane rocket family, an expendable launch system used to deliver payloads into geostationary transfer orbit or low Earth orbit . Ariane 5 rockets are manufactured under the authority of the European Space Agency and the Centre National d'Etudes Spatiales...

 for the European Space Agency

European Space Agency

The European Space Agency , established in 1975, is an intergovernmental organisation dedicated to the exploration of space, currently with 18 member states...

, can conduct two Ariane 5 ECA launch campaigns in parallel at the Guyana Space Centre.