How did plate tectonics influence Krakatoa's eruption?

According to the Live Science site, Krakatoa "is part of the Indonesian Island Arc. Volcanic activity is due to subduction of the Indo-Australian tectonic plate as it moves northward towards mainland Asia. read more

In one sense you could say exactly the same as plate tectonics influences every other volcanic eruption - 100%. Plate tectonics is what we call all the processes occurring on the earth’s crust that drive the full range of effects we observe - earthquakes, volcanos, subduction zones, continental drift, mountain building, you name it. read more

Krakatoa is a volcano in Indonesia that lies at the convergent boundary between the Eurasian and Indo-Australian tectonic plates. It was formed sometime within the past million years, when the two plates collided and the Indo-Australian plate began sliding under the Eurasian plate. read more