What is anodized aluminum?
In simple terms this is a hard protective oxidized layer formed on the surface of the aluminum as the result of a chemical reaction. The aluminum is placed into an acid bath. Like a battery the aluminum becomes the positive anode and the acid the negative anode. When an electric charge is passed through the acid bath the aluminum reacts quickly with oxygen forming aluminum oxide on the surface. The aluminum oxide replaces the aluminum on the surface it forming a hard non porous outer layer. Voila, you have anodized aluminum.
Does it make good cookware?
In one word, Yes.