"Open-access (OA) literature is digital, online, free of charge and free of most copyright and licensing restrictions" (Suber, 2012).
Open Access focusses on academic research and data.
Resources
The future is open: Establishing wider open access for research publications in Aotearoa New Zealand, by Thomas Saunders, intern in the Office of the Prime Minister's Chief Science Advisor.
Open Access Australasia (OAA): advocates for and supports practical OA initiatives in Australia and New Zealand.
The Fair Open Access Principles: research outputs that are Findable, Accessible, Interoperable and Reusable .