HYLAS, an acronym of Highly Adaptable Satellite, is the name of a small geostationary communications satellites.

The satellite structure of HYLAS is based on the standard commercial satellite bus I- 2K of Antrix, a company of the Indian space agency ISRO. As payload it carries two Ku -band transponders, primarily for HDTV, eight Ka -band transponders with eight spot beams (forward link) and an additional Ka - band transponders (return link). The signals are radiated by each antenna, wherein the antenna has a double size of 1.6 x 1.35 m, and the Ku-band antenna having a diameter of 1.6 m for the Ka-band. They allow customers in Europe, the supply of up to 300,000 broadband Internet access and in addition a number of conventional Telekomunikationsdiensten.

EADS Astrium built the satellite, with the support of ESA and the UK Space Agency BNSC. The total cost amounts to € 120 million, of which € 34 million ESA takes over. The operator of the satellite is the British company Avanti.

HYLAS should be brought into space on the first start of a Soyuz rocket from the Kourou spaceport. Originally, with the Soyuz launch the been sought already in September 2010, and then in October 2010. As this had ever moved, came instead, an Ariane 5 ECA for use. The launch took place along with Intelsat 17 from Kourou in French Guiana on 26 November 2010 at 18:39 UTC.