1. Montilla-Moriles is a D.O. (Denominacion de Origen) in Cordoba, Andalucia. It was created in 1945.

3. Vinification is similar to sherry. Fino styles are not fortified but get to 15% abv naturally. Oxidised styles (Oloroso styles) can be aged naturally or fortified. The terms Fino, Amontillado, Oloroso etc may be used within Spain but are restricted to Sherry in other EU countries, where they are re-labelled as Pale Dry, Medium Dry, Pale Cream and Cream.
4. A solera system is used, as for sherry.
5. The minimum age for Montillas is 2 years (rather than 3 for Sherry), but the majority are much older.
(Sources: WSET materials, The Oxford Companion to Wine)