Ciabatta is an Italian white bread made from wheat flour, water, salt, yeast, and olive oil, created in 1982 by a baker in Adria, province of Rovigo, Veneto, Italy, in response to the popularity of French baguettes. Ciabatta is somewhat elongated, broad, and flat, and is baked in many variations, although unique for its alveolar holes. Ciabatta is made with strong flour and uses a very high-hydration dough.

Source: Wikipedia