Köprülü family
Capturing the city of Vienna had long been a strategic aspiration of the Ottoman Empire, because of its interlocking control over Danubian (Black Sea to Western Europe) southern Europe, and the overland (Eastern Mediterranean to Germany) trade routes. During the years preceding this second siege (the first had taken place in 1529), under the auspices of grand viziers from the influential Köprülü family, the Ottoman Empire undertook extensive logistical preparations, including the repair and establishment of roads and bridges leading into the Holy Roman Empire and its logistical centres, as well as the forwarding of ammunition, cannon and other resources from all over the Ottoman Empire to these centres and into the Balkans. Since 1679, the plague had been raging in Vienna.