The Multi Altitude Assault Transport was an evolution of the Galactic Republic's Low Altitude Assault Transport repulsorlift gunship and was a rugged, combat ready repulsorcraft used by the Empire to deploy its stormtroopers in a variety of environments, as well as conditions. Its design was very similar to the LAAT except for the addition of two more wings above the primary wings, and armor on the bubble-cockpits. Also, it shared the look of an ARC-170.
Like its predecessor, the MAAT was armed with a variety of weapons which included missile launchers and laser cannons. However, while the LAAT was primarily used to land troops on planetary surfaces, the MAAT instead was capable of transporting stormtroopers to much higher altitude locations such as upper atmosphere installations as well as starships hanging in low orbit of a world.
A modified MAAT was even capable of flying short distances through space in order to reach capital ships.