Why was bailey castle very important?

Bailey castles were significant because they represented a key development in medieval military architecture, combining a defensive structure with a fortified living space. The design typically featured a motte (a raised earthwork) and a bailey (a courtyard), providing a strategic vantage point and protection for the inhabitants. These castles served as administrative centers and symbols of power for local lords, playing a crucial role in the feudal system. Their construction marked a shift in warfare and settlement patterns during the Norman Conquest and beyond.