AutoZone is an aftermarket distributor of automotive replacement parts and accessories with an industry-leading supply chain inventory position. They also sell ALLDATA brand of automotive diagnostic, repair, and shop management software as well as maintenance items, accessories, and non-automotive products. Backed by their nationwide network of distribution centers, Hub / Mega Hub locations, and company-owned delivery fleets, members benefit from consistent market availability to keep their fleet vehicles operational. Most stores also have a commercial sales program that provides commercial credit and prompt delivery of parts and other products to local, regional, and national repair garages, dealers, service stations and public sector accounts.