Open access means that there are no barriers to the research, no paywalls: all research content is made freely and openly available, to anyone around the world. Rather than charging a subscription for people to read the research, researchers pay an Article Processing Charge (APC) at the point of publication.
If you want a quick summary of Open Access from the point of view of the Research Councils just watch this video. The video is produced by Springer but you don’t get the advert until the end 🙂
See on www.biomedcentral.com