Social Democratism is a moderate form of Socialism.
The Social Democratic current came into being by a break within the Socialist movement in the early 20th century. One reformist group of Socialists rejected the idea of a Socialist revolution, and instead tried to achieve the Socialist ideals through Democratic means.
Social Democrats are in favor of a highly regulated Capitalist market economy, but with a strong and large government [Moderate Interdependence].
Social Democracy is often considered the most commonly embraced political ideology in the world.