What is "intersky"

InterSky, legally Intersky Luftfahrt GmbH, was an Austrian airline headquartered in Bregenz, which operated scheduled services from its base at Friedrichshafen Airport, Germany, to major cities in Germany, Austria and Switzerland, as well as seasonal holiday flights to the Mediterranean from other airports as well. The airline ceased operations on the evening of the 5 November 2015 due to financial difficulties.