ViaSat-1 is a HTS (=High Throughput Satellite) owned by Viasat. Launched in 2011, it is the world's highest capacity communications satellite with a total capacity in excess of 140 Gbit/s, more than all the satellites covering North America combined, at the time of its launch. The significant increase in capacity is achieved by a high level frequency re-use and spot beam technology which enables frequency re-use across multiple narrowly focused spot beams (usually in the order of 100s of kilometers).
The European Space Agency (ESA) is positioning several data-relay satellites in the geostationary orbit to relay information between non-geostationary satellites, spacecraft, airborne platforms and fixed ground-stations. The EDRS reduces time delays in the transmission of data intensive and time critical applications and ensures on-demand data availabilty at the right time at the right place.