Software as a product (SaaP, also programming product, software product) — is a product, software, which is made to be sold to users, and users pay for licence which allows them to use it, in contrast to SaaS, where users buy subscription and where the software is centrally hosted. One example of software as a product has historically been Microsoft Office, which has traditionally been distributed as a file package using CD-ROM or other physical media or is downloaded over network. Office 365, on the other hand, is an example of SaaS, where a monthly subscription is required.