From an OUP Announcement:
The Global Academic Division of Oxford University Press (OUP) and Silverchair have engaged in a technology relationship to re-envision and re-deploy OUP’s content products and services. This collaboration brings together the two organizations’ distinctive strengths to develop the most state-of-the-art publishing platform of all the major research publishers.
[Clip]
Upon completion of this project, journals, books, and many online services will co-exist on the OUP platform for the very first time, allowing meaningful integration at a subject level to facilitate a seamless research experience for our users, customers and society partners.