NISO has released the ODI Survey Report: Reflections and Perspectives on Discovery Services.
Here's an excerpt:
The results of the NISO ODI survey demonstrate multiple complexities involved in the cross-sector teamwork required to support discovery of scholarly works. For a relatively new entrant into the academic technology space, discovery services have rapidly grown to provide researchers—as well as libraries and content providers—with many benefits. The various stakeholders, which produce and distribute the published product metadata that drives search and retrieval, have done fairly well to date with ad-hoc business and technical arrangements. Ultimately, the results of this survey support the work of the ODI, which aims to recommend streamlined and standard practices that might improve interactions across this complicated landscape.