What type of castle was Windsor castle?

Windsor Castle was originally built as a motte and bailey castle, which is a type of castle that was common in medieval Europe. Motte and bailey castles consist of a raised mound (the motte) on which a tower or keep was built, surrounded by a courtyard or bailey. The tower or keep served as the living quarters and place of defence for the castle's inhabitants, while the bailey provided space for other buildings such as stables, workshops, and kitchens. Over time, Windsor Castle was expanded and developed, and it now incorporates a variety of architectural styles, reflecting its long and rich history.