AMC-21 is a communications satellite operated by SES operating at 125 degrees West. Superbird 7 is a geostationary communications satellite operated by JSAT, positioned at 144 degrees East.
Ariane 5 is a heavy-lift launch vehicle, part of the Ariane rocket family.
Arianespace SA is a multinational company founded in 1980 as the world's first commercial launch service provider. It undertakes the production, operation, and marketing of the Ariane programme. Their vehicles launch exclusively from French Guiana in South America.INFO WIKI