|YBP now provides definitions of common single-title ebook purchase options such as Non-linear Lending, Concurrent Access, etc. Many ebook suppliers use different labels for purchase options, but they often have the same meaning. Click “eBook Purchase Option Definitions” in GOBI’s Links menu to better understand the similarities. And don’t forget the Ebook Platform Guidelines on Staffweb as a decision-making aid. In general, the Libraries prefers DRM-free options when available and affordable; otherwise, estimate the likelihood of simultaneous use of a title and make your decision accordingly. Remember, we already are buying the complete DRM-free Project MUSE corpus, and are making available DRM-free JSTOR ebooks through a DDA program.