We have all at some point been offered free CDs, be it free discs offered at supermarkets, on the front of a magazine or newspaper or directly posted to us.
CDs are a great marketing tool, as in the case of software promotion, not only can information about the software be contained on the disc but the actual software itself can be on the same disc, this saves an immense cost when the need for an accompanying printed brochure is not required. Not only is the cost of printing the brochure saved, but the associated distribution cost of that brochure.
CDs have a huge penetration in the global market. Almost every household would have a device that can play the disc to include a computer, CD music player, or even DVD video player, therefore we can ensure an advertising campaign on CD can be listened or viewed by anyone.
If a company has a huge catalogue of products, such as an electrical component company, or building supplies, then it is vastly cheaper to feature the full catalogue on a CD disc. The user can make intelligent searches for products they require and directly find this information, rather than wading through pages of pages of unrelated products.
A big benefit of having the full product catalogue on CD is the huge saving on the cost of the paper and printing, CD offers an alternative to hundreds of catalogue pages.