Avio is the prime contractor for Vega, the new European rocket system designed to launch the small satellites that are expected to be the main driver of the aerospace industry.
Friday's launch was part of what Esa calls the Vega Research and Technology Accompaniment (Verta) programme - a sequence of flights intended to demonstrate the rocket's capabilities whilst at the same time moving it towards full commercial service.
Vega will take its place alongside its "big brother" at Kourou - the Ariane 5 heavy-lift rocket, and the new medium-lift "Europeanised" Soyuz rocket that has only recently started launching from the spaceport.