What is a CD-ROM primarily classified as?

A CD-ROM is primarily classified as a type of read-only memory because it is designed to allow users to read data from the disc without the ability to modify or write new data onto it. This format is specifically utilized for distributing software, educational materials, music, and video content, where the integrity of the data needs to be preserved. The "read-only" aspect of a CD-ROM means that once the data is written during its manufacturing process, it cannot be altered by the end-user, distinguishing it from writable media like CD-R or CD-RW discs, where users have the ability to add or change data.

In this context, while some may consider CD-ROMs as storage mediums for specific applications like video games, the fundamental classification remains centered on their nature as a form of read-only memory. Therefore, identifying a CD-ROM primarily as read-only memory provides a clear understanding of its capabilities and usages.